Depends what kind of insurance he has or the company has, My rs1800 got written off, was not my fault, I got paid out for it and the insurance company didnt want the car either, In there eyes its not really worth anything.

Depends what stage of the process its at Has the claim been settled?. You can ask them if you can get a few quotes to have the work done and they may be willing to pay for it to be done.

If he gets to keep the car after the claim has been settled, once you have had the work done you will need to get the car VIC checked and re-mot it and re-apply for the log book.