i am new to this im getting a 31 ford coupe and dont kno wat kind of engine i should get i was thinking of just getting a block and building that up with all high pro parts i want at least 450 hp of the engine so if neone could help me out with wat size of an engine i should be looking at the help will be greatly app. also when doing a hot rod you have to re weld the engine mounts for the spef. engine rite?