If your asking where to buy those parts, I wouldn't be looking at performance shops in Sydney. The interweb is your friend.
If your asking about installation, most of those are very easy and well covered on this forum. Consider doing them yourself if you have the time/tools as its a great way to learn and save some dosh (for more mods of course!).
As always, I'd give Nathan @ Grey Imports ((02) 9519 5150) a shout if your in the inner west area.
Lucien.