There is a mustang II running around town, it has about a ten footer red and black paint job, the motor is stock 302 and C-4 auto the only upgrade is dual exhaust with chrome tips out the back. Now my question is what would be a fair price for this car? Don't worry I am not a II hater I like all mustangs and always thought the II's would make a real sleeper with a stout small block and gears, and I figured they handle good as well.
You haven't really provided enough info to even make a ballpark guesstimate. More specifically, year and body style would be most important to start.
Or it could be worth it's weight in scrap. Local kid put lots of work into his II, looked good until I looked underneath. I would have been afraid to drive it around the yard.