stock head & n20 question
plenty of people spraying 200-250 on factory castings. you'll have more issues with lifting the heads and ruining gaskets than casuing any damage to the head itself.
the aftermarket heads have thicker decks and will work better w/ extreme cylinder pressures.
Nate
Nate
as for sce
i had 2 sets leak on me, and 1 set on another car, and my buddy did a stang with them, and same thing.
i like mls beter

