I just bought another 2006 z06 after two long years without one

. The z06 already has a ton of mods and is pretty much maxed out as far as N/A power is concerned. It has an g7x3 LG cam, WCCH stage 3 heads, Fast 102 intake and wp102 tb, 2in primary long tubes full off road x-pipe and GT2 catback. Anyhow, I would like more power :doh: and wasn't sure if I can squeeze anymore out of her without blowing her up, lol. I was thinking of a nitrous plate kit with a 100-150 shot or a A/A vortech kit with 4.5 psi. Any suggestions? What is the limit of the stock shortblock? Thank you for your help and time,
Allen