Well there are a couple of options:
Dingo on the forum is very handy with his metal work.
You would have to ask, but Rhino240z has done some awesome work, but don't know if he would do others cars.
And if you want the guy who does Hotrods and stuff, then Mark Oliver Panel beater in Queanbeyan is expensive, but you get what you pay for, he really does do brilliant work.
I can't think of anyone else who stands out above the rest then.