what is an "O-ring setup?

Edit: Also, maybe we need a link/info on getting these new studs from ARP. Drill + tap sizes.

I think this should be mandatory for people even thinking of boosting there 420a's.

I hate hearing from the 4g63 people that the 420a's don't hold up to high power because of head gasket leaks.

While the blocks are apart, and already getting fitted for ARP studs... Lets explain how to do it right so the fucking head gasket doesn't have to be changed every time we hit 21+psi.

ARP part numbers, drill sizes, tap sizes, o-ringed head gasket info (www.headgasket.com)?

Lets start getting rid of this stereotype for the 420a.