the Merc 368 installed in T-Birds for the speed trials on the beach.
The supercharged 312's, rated at 300 hp, generally thought to be about 340 off the showroom were available in all 57's. Even Skyliners and wagons were built w/it. They were only available for about 3 months though. Strangly they only had 1 4000 series teapot carb.
Ron.