Thank you for your replies.
How do they test a rear demister? There is a switch and I think it's connected (Haven't actually tried it) but if the hatch glass isn't fogged up then how do you know if it works. I know the heater works and I can select windscreen so thats ok.
With the rear bumper I think I will just give the RTA an anonymous call to see what they have to say.
Rust?,...Check
Horn works
Not sure about the tint issue, she dose have some and it is pretty dark.
I will need to fit a standard exhaust as she is currently running Extractors into 2.5 inch tubing with two hot dogs, all in all a bit noisy/polluting.
I guess I will have to contact a few more locals to see who they suggest in both mechanic and RTA depot (I have a choice between Cobram and Shepparton)