You mean my old VH which burnt and I don't have anymore, or my new project SL/E that's getting a twin turbo EV6? Oh, by the way, my daily is a VR. So go back to sleep.
Not that I see any point in helping someone that obviously has no ability to use a search function, or even look at relevant threads in the relevant forums, I'm going to help you anyway.
There are two paths performance wise that you could take.
N/A: Cubic muscle. This could entail converting to V8, or adding performance goodies onto your engine.
Stage 3 cam.
http://www.crowcams.com.au/templates/Catalogue-HoldenV6.shtml Part number 774757
Port and polished heads
Upgraded valve springs
Blueprint and balance
2" Twin cat Di Fillipo exhaust system, with pacemaker extractors
The list goes on.
Forced Induction
I'll go into this later, I'm tired, and have work in a few hours. :hit:
I just have to say, be less of an idiot, not everyone is being an arse to you. You asked an open ended question, with no indication what sort of path you wanted to take.
And further,
do not insult other people's cars!
Here's a pic of my VR, without a bodykit.
http://img.photobucket.com/albums/v91/deathsminion/vrcommo/vrclean002noreg.jpg
Looks alright, in my opinion.