If I had as much money to spend as I wanted, Id go 408. However, you cant beat the deal on a 393 from Flatlander. You can get SRP pistons, 5140 scat crank and Scat H-beams all for just under 1100 bucks. This stuff has been proven to hold up to 650-700 HP repeatidly. Know your budget and know your expectations.[img]/phpBB/images/smiles/icon_spin.gif[/img]