Without seeing the interior, engine compartment, trunk, or underbody it is hard to give a good estimate. But if it were me and from your sig pic, I would probably insure it for $20,000. Insurance prices are usually higher then real world value, so keep that in mind. Also tally up your receipts and see how much money you have in it. Your best bet is to get it appraised by a professional. If there is an accident or its stolen, then the insurance company cant d1ck you around because you will have proof of what the car is worth.