i forgot all about having one motor with reverse rotation.
i looked up the newer 454 marine motors and around 400hp and up had rectangle port heads. but that doesn't really make much difference to me since i wouldn't be using the heads any ways.
i called him and asked for the #'s off the block.
any guess if it will have forged rods and crank? it looked like all the new 454 marine motors have forged crank, rods and pistons.