i want to mke the truck into a fast street cruiser. My dad has tons of 350 parts and blocks. so i'll swap a block for a block. it wont be for a while though because i'm currently restoring my car a 1968 Pontiac Beaumont Custom 2 door hardtop which i have a 383 stroker for it which i got for free because there was a problem with the rod bearings. the motor came with a performance comp cam with a 488 lift in it. back to the 350 would i have to box the frame on my truck if i want to put 400-500 horsepower in the 350 or not. also what is the difference between the cranks and gaskets, heads of a 383 and a 350. does anyone know the engine swap kit for a 350