1. ADVERTISING: If carried, must be neat in appearance. Members' cars shall display IVRA decals. Period specific advertising is encouraged. Some organirations set a sq. inch limitation on advertising.
2. BATTERIES: Must be securely installed. Batteries mounted in cockpits must be covered. Battery terminals must be covered.
3 BOOY: Bodywork must conform to SCCA GCRs for 1973, except for historic cars. Automobiles must be prepared to exhibit a clean & neat appearance with all bodywork intact and painted. IVRA intends to present racing vehicles in basic origina1 condition or with modifications, equipment and options that are consistent with and were available according to the vintage of each car.
4. BRAKES: Dual master cylinders and braided steel lines are recommended. Original type discs/drums are to be used. Size and shoe/pad material of your choice. Vehicles must have at least one working brake light. Formula cars are exempt but must carry a functional rain/fog rear light.
5. CATCH TANKS: Securely mounted and a minimum of one quart capacity each for engine oil and radiator overflow.
6. DIFFERENTIALS: Original housing must be used. Ratios and limited slip by owner's choice.
7. ELECTRICAL CUTOFFS: All cars must have an externally mounted master cut-off switch permanently mounted & clearly marked with electrical symbol. This switch must be in an area easily reached by the corner workers.
8. ENGINE/TRANSMISSION: Must be original type as specified in the SCCA Production Car Specifications. With the exception of Formula Fords, original specifications regarding displacement, carbs and horsepower may be changed so long as the performance technology was available when the car was in production. Increased engine displacement must be declared on entry applications.
9. EXHAUST SYSTEM: No restrictions except must exit toward rear or side of car and behind driver. Please note that some tracks have a 93 db maximum noise rule which would require the use of a muffler.
10. FIRE PROTECTION: All cars must carry a dry chemical fire extinquisher of at least two pound capacity rated lA-lOBC or better. Must be mounted within drivers reach. On board fire suppression systems are highly recommended for all sports racing and formula cars. IVRA recommends on board units for all cars.
11. FIREWALLS: Except for certain formula cars, a complete firewall is required between cockpit, engine and fuel tank areas. Holes larger than 3/8 inch diameter are not allowed.
12. FUEL CELLS: Mandatory for all formula & sports racing cars and recommended for al I other cars. Fuel filler caps must be securely fastened in order to prevent opening on impact. Monza style fuel filler caps must be safety wired or pinned shut.
13. MIRRORS: Sufficiently deployed to afford unobstructed view to rear of vehicle.
14. NUMBERS: Racing numbers will be permanently assigned on a first come first served basis. All cars must display their numbers, minimum 10 inches high, 1 inch stroke, on front and sides. Class designatiom minimum 4 inches high, are required on both sides of car following assigned numbers. Adequate contrast between numbers and background must be maintained in order to be legible to timing and scoring officials ffrom either side of track.
15. ROLLOVER PROTECTION: Roll bars are mandatory for all racing vehicles. Roll cages are recommended for open cars. Pre-war historic vehicles will be reviewed individually under this requirement. SCCA roll bar specifications have been adopted by IVRA. Roll bars must be higher than the drivers head (with helmet on) when seated in the car.
16. SAFETY BELTS/HARNESSES: 5 or 6 point harness with 3 inch lap belts required in all cars. 2 inch minimum shoulder and submarine straps also required. This assembly must be secured to body and frame with adequate reinforcement plates. Belts and harnesses attached only to seat or seat frame will not be accepted. Arm restraints are required in open cars, formula cars and cars with sunroofs. Window nets may be substituted in closed cars.
17. SUSPENSION/STEERING: Original attachment points must be used. No excessive wear allowed. Periodic crack testing is recommended.
18. THROTTLE SPRINGS: At least two external throttle springs are required on throttle linkage.
19. TIRES/WHEELS:
a) The use of any wheels of the same diameter and with a rim no more than 1.5 inches wider than the original production wheel is allowed. Changes in track resulting from the above wheels may not exceed plus or minus 2 inches from the track dimensions listed by the SCCA for the specific automobile. Wheel spacers may be used within the above dimensional restrictions. The use of center-lock wheels and hubs is permitted within this track restriction.
b) Formula Cars, Sports Racers and Prototypes wheel type and size must comply with what was originally authorized for the type of car by either FIA or SCCA.
c) Tires must be free of visible defects. (cracked sidewalls are considered visible defects). Any minimum series 60 DOT approved tires with a tread depth of a minimum of 1/16 inch must be used by all production and sports cars. The speed rating of the tire must match the capabilities of the specific car. The tires may.not intefere with the bodywork.
d) Formula Cars, Sports Racers, Prototypes and selected exhibition cars may use racing slicks which are in good condition and free of any visible defects.
e) Changes in wheel width and tire size shal not cause tire to interfere with the bodywork under any conditions of steering lock or rebound. In order to provide clearance for the wheels and tires the the interior fender panels may be altered but not removed. The exterior contours of the fenders may be altered only to provide for tire clearance. The fender opening may be ''radiused''. Fender flares, if used, may extend a maximum of two(2) inches from the original body.
f) The tire tread may not extend beyond the fender opening at the highest point of the tire.
20. SPOILERS:
a- The fitting of a spoiler to the front of the car is allowed for cars manufactured after 1968, provided that no changes are made in the bodywork for this purpose and that it does not extend to the side beyond the centerline of the front wheels nor more than three (3) inches below the lowest part of the original and stock front body panel. The spoiler may not pass above a horirontal plane passing through the wheel center hublines nor may it extend forward beyond the most forward part of the front body panel.
b. Pre 1968 cars will be allowed a spoiler which extends no more than one 1) inch below the lowest part of the original stock front body panel and follows all the other guidelines listed above in "a". NOTE: Other vintage organizations do not allow the use af spoilers.
21. TECH INSPECTION: A complete tech/safety inspection will be performed on each car at least once each year. Any technical infractions must be corrected before the next event. Severe technical infractions may require repair before vehicle is allowed on the track.
22. UNDERTRAYS: Cars equipped with undertrays must provide adequate drains or holes to avoid trapping fluids.
23. WINDSCREENS: May be removed and replaced with a "Brooklands" type screen or other at owners discretion. Head lamps, if used, must be taped.
24. GLASS: All glass except windshields in closed production cars may be replaced with plexiglass.
25. SEATS: Seats shall be securely fastened.
26. TOWING: An eyebolt or equivalent shall be provided for towing. On open cars, the rollbar will suffice.
Racing cars approved by other vintage race organizations will be accepted at IVRA events provided that appropriate entry fees are paid and drivers are duly licensed and are in good standing within their parent club.
Members are cautioned that some eligibility standards within IVRA may not be accepted by other vintage racing organizations. You are advised that should vou choose to compete in other venues, your car should be prepared to meet the appropriate rules of the vintage organirations presiding over those events.
This might be something that can be voted in.
What class? 
