My GTS-4 failed its last WoF because of rust under the boot (was too close to seatbelt anchor) and in the wheel well (surrounding a bolt for the fuel tank). Nearly failed for rust on the drivers door sill too.
Rear window needs to be taken out to fill in the HOLE (rather large ) so there's gonna be a cost involved with that.
Custom Panels quoted about $450 or so if they had to take rear window out, or less than $300 if not.
Anyone know of anyone cheaper but who can do just as good a job? I know cheap and good job don't go together, but yeah. Putting the rego on hold on the car, but still need the rust fixed - theres a lot of it (most didn't get mentioned in WoF though).