If you want to run a big shot of NOS you should be putting in a set of studs. Some people get lucky and have no trouble with the stock head bolts. We got away with it for a long time but I just pulled the heads off Stroked Lightning and we have blow'n the gaskets out of 6 of the 8 holes. If you want to play be ready to pay.
My $.02 worth
GENE
My $.02 worth
GENE