Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.
yeh i was thinkin that about the insurance but would they really take the engine apart or would they just have a quick lookYep I was told any performance mod while on your Ps is illegal.
If they pin you on the exhaust be a nerd and say its a High-flow exhaust to improve fuel eco or the old one had a cracked weld and it had to be replaced.
also think about insurance. If you crash and you have not noted this to the insurance company about the mods, bye bye insurance
You may want to rephrase the title of you're thread.
You clearly don't care about what legal modes you can do, you actually want to know what mods you can do, legal or illegal, that you probably won't get found out for.
In direct response to your thread question.
No performance modifications are allowed on P's. Period.
Save your money, wait till you're off your P's and either a) get something that already goes hard or b) mod till your hearts content.