I've got a '73 F250 with a 360 that will soon have to be rebuilt or replaced. The 360 runs great but has a 9 mpg bad habit. I've heard a 390 is a "better" choice. Mr. Gazzguzzler presently has a new C6 sitting behind the
360. My question is will a 390 bolt right up to that bell housing, pilot shaft, motor mounts, exhaust manifold etc.? Appreciate you advise.