79 porsche 924?
 

given I'm just guessing Mb Star C4, i would say that this car wouldn't be to expensive to repair. The 924 was originally slated to be an Audi designed by Porsche, but Mb Star Connect C4 then they pulled out. Porsche decided to buy the car witch gave them access to the VW/Audi parts bin. So although most porsches are expensive to repair this one used mostly VW/Audi parts witch are easy to come by and are cheap so i could imagine a decent restoration job running $5,000 to $10,000 dollars. Personally i would buy a 944 that dosen't need work for around the same total cost, and twice the car the 924 could ever be.