I have a ls turbo With the 2.2L and thought u guys would have better advice than the na guys!! I'm building my motor full pistons, rods, head gasket, head studs and rod bearings. But i have a cometic head gasket and i have bin hearing a lot of bad things about them not sealing, so what other brand head gaskets have u guys bin having luck with stock or after market ? I'm gonna be pushing 20 psi on my 50 mm precision turbo so I want it to seat properly. And when I put the pistons in should I reuse my stock rings on my sleeves or hone the block and re seat the new rings on my stock sleeves ?? Any help please???!!