Alright, here is another question for yall. I can get a 4-bolt 427 block for 200, std bore. I know that a 427 and a 454 are the same block, but what is the deal with a tall deck. I would have to get longer rods to have decent compression right, but if I did that wouldnt that limit how much I could turn it up? Also i hear the intake is wider, does that mean a regular set of heads wont fit? How bad of clearance problems would I have? Thanks again for any and all help guys. Steve