Boost and timing

It'll probably hold with that block, those studs and girdle. Depends on how hard you push the boost. Stay conservative to your goals and don't trust meth to the point where you ultimately rely on it to cool temps down. Tuning is a big factor. The best forged piston will grenade if you go lean and detonate. Anyone can run stock oem parts on boost like I am, it's all in the tuning, for me the limit is my parts integrity to the stress of boost, meanwhile you have the upper hand. You're running big inches and it won't take much boost to reach 600hp easily.