Comment on compression ratio and piston to deck height. With aluminum heads, forged pistons and a not too wild performance cam I'd prefer to see compression in the 10.2 to 10.5 range for street duty. It would be even better with quench (zero deck piston, .038-.040" gasket). Getting CR in this range with zero deck will require a "D dish" piston. Sustained running on the street puts a lot more heat in the engine than a run down the strip and detonation is no fun.

I don't think the 512 piston/rod setup would be a durability problem, however, the cubes would out run the heads. I believe the engine work/feel better with the 4.15 stroke and Ed heads. Either one should work fine with 3.23 and a 26" tire.