Yes, Virginia, there was a Police Interceptor 3.3L in some Zephyrs. The ones I know of were modified by a Ford-authorized shop in Denver after delivery to local dealers. They were used for security companies and campus patrol vehicles, mostly. They have a very low-profile, wrap-over style air filter can that resembles the ones found on mid-70s Merc Capri 2000 engines, complete with a hot-air exchange inlet for cold weather driving. The only thing that is different from the stock setup is the flapper that diverts cold/hot air: it works backward if you use the stock thermal coolant switch, so you must change the switch to use the flat cannister. Then you can bolt on the 1/2" high carb adapter, which has the EGR port on the side, and bolt on the H/W 2 bbl. As soon as I find all of the parts, I'm going to do this to mine. Oh, they also have a fan clutch to reduce drag (instead of the flex fan). I added this to mine and instantly saw a better hillclimbing ability - very important here in Colorado.....
