ok ao i have a 3sgte sitting in my garage and im planning on what my plan of attack is going to be but i really dont know how much the stock blok can hold. I want to build this to push 350-400 hp (does that sound like a reasonable mark?) So i dont want to spend money reinforcing the block if it can handle that power no problem and spend it somwere were it could help..so yea any info would help...thanks