There have been SO many builds that I've seen that have eclipsed a V8 build and that doesn't make sense to me. I wouldn't "mind" finding some TRW forged stock replacement pistons and there are some on ebay. But that's more expense that I don't have, plus, I believe the factory cast pistons will take 10PSI.....not that I'm gonna do that. I just think they would, especially as long as I didn't try leaning it out gettin all the fire I could.