With the prices of the early NSX fluctuating so much in the market, how did you go about determining what the actual value of your car is for insurance purposes? With all of the work that has been done to my car, the standard replacement cost wouldn't even come close to replacing it with another NSX, never mind one in near as good of condition as mine. My insurance company does offer an agree-upon value policy for an additional premium. Should I take the purchase price of the car, add up the receipts for all of the repairs, but leave off the upgrades (SoS supercharger, etc) to come up with a starting value?