no prob longroof if you do the work yourself and shop around u can do this swap on the cheap. the only thing im changing is im fixing to replace the truck oil pan with the holley version. A friend of mine is doin ls swap n his 56 bel air and he has the holley pan and man it looks awesome and the clearance is awesome The truck pan hangs down below the gbody crossmember so i will prob put on holley pan just to b safe.