If you are tempted to sell, is that a number you'd be tempted to sell it for? Everything has a price and the buyer has no emotional attachment to the car so may get a condition 2 car for not much more money elsewhere or end up more for "less"... if indeed yours is a 3... may be a 4 or a 2 or something in between with numerous nuances
You can therefore argue whether it's a 3-, 3 or 3+ or 3++ or... til you are blue. If the resulting offer is one that would tempt you to part with your car, the "3" is immaterial
No doubt your car doesn't "owe" you that money, and if you sell, what might you replace it with: for example, if you've always fancied an early 911, your $75k isn't going very far but you can but a brilliant Alfa for that money. Or you don't replace it and put the money in the bank to earn you interest...
The issue for me therefore, is, what's your price for a Pagoda shaped hole in your garage? And If you'd buy another Pagoda, what "cost" to do that in terms of car, time, parts and skinned knuckles