I appreciate you being open minded. If I was in your predicament, I would use the high flowing W2's, get a piston that'll give you good quench and around 11:1 compression, and run it on E85. ATM carburetors are fantastic, those guys understand alcohol fuels very well and build accordingly. I run 11.2:1 compression on my aluminum headed A Body (250/258 @ .050 Isky solid flat, spec'd by Brian at IMM - I love it), but my street/strip vehicle is 12:1 with 33lbs of boost on top of it from a Garret G30-900. Point is: E85 is amazing, as long as you don't let it sit. Start the car up once a week so the fuel doesn't sit in the bowls, and you're good.