How much should I ask for my 1987 vw jetta?

Mileage is uncertain as the gauge stopped working properly about a year ago, approximately 280,000 miles at most. I replaced the clutch after it was stolen approximately 2 years ago. It was found a street away, yet my insurance co. wanted to total it out. I now have a branded title?! My insurance company paid $2,000 to replace the clutch. While the clutch was replaced, we took the engine completely out. We took out the air conditioner. I never used it and my mechanic/buddy said I would get better gas mileage. We replaced all the gaskets/seals/belts while the engine was out. It barely loses any oill. The car runs like a sportscar. I change the oil every 3 months. It gets great gas mileage. I'm only selling it because my father is giving me a newer car, just had a baby. Hate to sell it but don't have extra $ for insurance. When someone test drives it, they will see it handles exceptionally well, can drive 70/75 mph easy. Car is equipped with a sunroof, cd player, new radiator (last oil change the guy poked a hole in my old one and had to replace it), good overall condition inside and out. When I acquired it the driver side doors had slight dents in them. I don't currently have a photo but can certainly get one to you.