As others have said, its going to be clearer for you once you actually get your eyes on it first hand. If your insurance (and in some cases state law) allows for owner retention of the total loss vehicle then you'll have to decide if that's the route you want to go. If you can salvage the reusable parts for another Cutlass/G-body or even part it out and sell them then youll at least make your money back from paying the salvage value to keep it. The smell would be my biggest concern after wiring. Some stenches simply never leave. Sorry for your loss and best of luck.