Thanks for the replies guys but none of this seems to be working. I've gone to Autozone, Ceckers, Pepboys, Napa, Carquest etc. I tell them all the same thing. I need a carb rebuild kit for a 66 Mustang 220 manual tranny, 1 bbl manual choke. They all want to know the carb number and go into convulsions when I tell them there is no carb number. I have the carb off the vehicle and have tuned it every which way looking for an ID number. All it says if FOMOCO on the back of the carb (facing the cab of the car) No numbers anywhere. I'm not above being told I'm a dumbass for missing something if anyone can help. Thanks.