Idea: I noticed you have a lot of mods, why not restore the car to near-stock, sell the aftermarket parts separately, and sell the car to someone then?
I figure you can easily get what they are saying they'd buy your car for STOCK, and then you'll have all sorts of aftermarket goodies to sell for cash.
I see nice wheels, exhaust, trunk, etc. All of that is valuable to the right buyer. Then the car can go to a person who appreciates making their own mods.
Good idea. Will be a lot of extra work, but it may be worth it in the end if it makes getting the MS3 reasonable/possible then.