Apex32 – Welcome to the Heard...

I don’t believe anyone here is interested in convincing you to by a GTO, that has to be all on you…
Heads, CAI and a cam will get you around 415 RWHP, depending on your set-up and tune. Here is an idle clip of my Goat with the Mods you are talking about installed. (2006 – 6 speed,228/232 – 595-595 cam, SLP catless LT’s, SLP LMI exhaust, ported, polished intake & TB, AEM CAI, stainless steel filter, throttle body spacer, Piss off the neighbors loud…)
I am sure your other questions will be answered in short order…
666 Warm Start Up