For what you describe, you might be able to go as high as $8k. I have had mine for 12 years now,and I do most of the work on it myself. It has never been garaged, the front seats are showing it and so are the door panels. The tan interior seems to be the most susceptible to uv damage and discoloration. I have had one absent minded driver plow into the left rear axle that miraculously did not touch the body! Another, a sheet of drywall came at me on the freeway and took out a nearly new window and dented the front roofline. Still, I have never had a car as fun as the bertone coupe. I tried to sell mine for a few years, asking 4500.00 as recently as last year. Only two people contacted me. Locally, in the northern California coast area, a few have come up for sale on Craigslist for 1800.00 to 2500.00 - questionable treatment. I am the second owner of mine. Hope you can keep yours, sounds lovely and intact. Of course, you will want to feature the car in a medium that will attract the right audience. Good luck to you.