360 procharged

I'll bet you could easily run 10 psi,and crank it even more for the track. Tough to say where your weak point lies. Most likely you will eventually bend those stock rods. The cast crank is quite a strong one,I'd say it's fairly safe to run 10 psi on it. Heck,it might take 15,you never know...

You might consider studding the head's,if you havent already. Maybe even o ringing?

One thing for sure. Your gonna have a LOT of FUN!