Can't give you all the answers, but cat C cars are classed as uneconomic to repair, but it sounds like yours wouldn't be too bad if you use 2nd hand panels
You do have to get inspected before you can register it, that involves trailering it to an inspection facility
Insurance can be a bit higher, and the value of the car a bit lower, but can still be up to 75% of the value
Bloke I know just put a cat C 944 turbo back on the road, and this info is based on his experience
