I don't have any plan to sell the Boss, but resale matters if you ever get in an accident. While most of the parts on the Boss are interchangeable with other Mustangs, there are enough unique pieces that eventually even a relatively minor hit could trigger the insurance company to declare a total loss. Wheels, suspension, stripes, interior bits, and of course anything to do with the engine. This is the risk you take with a pristine "collectible". I knew a couple of people who paid top dollar for great muscle cars 25-30 years ago before the values skyrocketed, and minor fender benders caused the insurance company to declare the cars total losses because of the cost of difficult to find parts vs. relatively low "book" values based on comparable resales. A good friend of mine spent a long time finding a '69 Vette with a 427 TriPower, and when he finally found one, he paid the then seemingly astronomical price of $23K for it. He spent a year and another $5K or so getting it to be great, then a drunk blew a stop sign and took out the front end. By the time the insurance company added up the cost of the hood, fenders, aluminum radiator, motor mounts and other items, they declared it a total and paid him about $20K for it, the going book value for a big block '69 at that point. Another guy ended up in the same position with a '69 Barracuda Formula S. They cars were very repairable, but that is the game the insurance companies play. If you have a pristine, low mile car with high dollar or unavailable factory replacement parts, they declare the car a total, give you high book and you take it or leave it. You need to consider collector insurance as the book values drop.