Yeah that may be too far gone for an AU...
My SII XR8 has little to no rust but then she's parked inside my garage about 90km from the nearest salt water.
What I do need are the front bar, preferably in Liquid Silver, and a new egg/
HVAC controls as mine look...moth-eaten.
Apart from that drives like a new car...new suspension, engine mount, gearbox mount and assorted rubber bits does that though
...oh and the parts for a manual conversion would be nice