Hey dude..SA boy here too...
www.crowcams.com...check it out for cams for your EF, they offer stage 1 & 2 cams, offering similar increases in power, for around the same price. For fitting, I recommend S&J Automotive on Marion Road @ Sturt..opposite Harvey Norman, the guy who runs the place Shaun is a real enthusiast, and he will actually talk to you about what you want.
For exhaust, I recommend Southern Exhaust on Lonsdale Highway @ Lonsdale, the dude there is a Fordman, he did me Advance headers, 2.5 inch all the way through, Hi-Flow cat, Dynomax muffler and Custom tip for $850 bucks.
Hope this helps you out...
Regards