stock 350Z's make around the 225-230RWHP mark as there was one the day i did my run, mate of mine has an Aristo TT running 1bar of boost + intercooler, boost controler, netting 305.8RWHP with stock exhaust so its not out of the relems of possibility running a TT set up off the supra thicker headgasket to lower compression and running non VVT I head to simplify things... but there is soo many options for doing the conversion my brain is numb from what has best gains to best reliability and tuneability.

GS400/430 were never available till 05 in aus so i never had the V8 option

 

when you say catback do you mean true cat back or the first resonator back?

the cat's are on the exhaust manifold so........

 

The first resonator back.