[IHateHacks]

First of all if you are running anywhere close to 20psi you will need more than head studs, a metal head gasket and race gas. You will need rods, ARP rod bolts, pistons, lexus maf, 550's, walbro pump, and something to tune it, at least a S-AFC. But to do it properly "I" would strip the block, send it to a shop, do it right.

Use bolts only if you are going to keep it fairly stock, like no more than 10psi. If you are using a metal head gasket then don't skimp out, use head studs.