Truetriplex wants an appraisal for insurance only.
You need to find an appraiser who know the value of Cobra and that is hard to do.
You can go to an appraiser who deals with custom cars, hot rod, etc and tell him how much you have spend on the car. He should work with you and give you a fair appraisal. Next is getting the insurance company to accept the amount of the appraisal.
If you deal with someone like Robbin Terry of Midwest who understands Cobras it will be easier to insure for the amount you have invested.
Midwest Classic Insurance
You will pay premium on the dollar value of the car. The more value the more the dollar premium.
Dwight