I am thinking of selling my 1980 e21 and would appreciate some pricing advice. The car has almost 300,000 miles on the originals engine. It needs new seats badly. It has some rust from being kept near the coast for the first part of it's life. It could also use new paint in places. But it runs pretty well & is fun to drive. I guess I can either sell it or part it out, although I hate the thought of killing a perfectly functional car just because it's 30 years old. Thoughts?