forged 392 stroker, 14 psi of boost, ford racing 80lbs injectors, paramount trans, 3200 stall and about 40 hours of tunning with diablosport top tuner. most the time the car runs around at about 4 psi and makes 561 @ 6000rpm at the wheels. at 4psi with a light foot the car has shown around 26 - 27 mpg. but only my wife gets that kind of MPG. i get about 15, BUT i get where i'm going a lot faster (180MPH faster).