who runs 13sec to 12.80 in the 1/4

its a 76-78 with forged pistons and a eldy air gap rpm and 750 vac carb and headers

So the aftermarket forged pistons are how low/deep in the hole?
Coupled with what gasket Diamaentions) and (Amount of cc's) heads? Are they .030 overbored? Valve notchs in the pistons are how deep?

Flyfish, your guess is good, chassis depedent. But good. Air quality here at the shore on this Long Island can vary alot from time to time.
Believe me, when the milli bars rise on a cool night, it's a beautiful thing.

Low 12's should not be tooooo hard with that engine package. Again, weight and chassis tune play big.