my 57 292 is bored .050 over to 312 std size. i have a nice set set of ECZ-G heads ready to go. i've acquired a few intake combos for this build.
edelbrock 257 with dual 400cfm AFB's
edelbrock fm255 with dual teapots
highly polished offenhauser 6x2 with stromberg 97's
weiand 3x2 with strombergs.

something inside of me is telling me to sell all those intakes and carbs and join the big leagues and go with a 4-71 on top.

does anyone make a low compression piston for the ECZ-G heads? is there anything off the shelf or do i need to go the custom route? 
will it be better to trade the heads for a set with larger combustion chambers?