Dont let the insurance company low ball you like 1,500 bucks for that chassis. If they do tell them to produce a shell in the same condition for that price.
Hindsight is 20/20 but its reason's like this i have classic car insurance with a fix payout no question's asked other than was i driving it for reasons other than pleasure.
Suggest you look into this. Mine is 105.00 A YEAR threw hagerty. I can put 10,000 miles on a year and its insured for 10,000 bucks no insurance adjuster needed policy. I send them annual odo pics and document any and all changes to the car. Hell i have insurance on spare parts. Please dont let them low ball yah.
Personally i would not settle for any less than 5 grand. figure 1,000-1,500 for a shell and the rest paint or rust repair. Pending on how nice your car was. Kinda hard to tell once its been hit. Thats with you getting this car back. If they wanna take the whole thing i would want close to 10. But they always sell it back.