That's an easy question. But what I've often thought about was if I had to trade it for another car, (and use it as often as my urq) what would I replace my urq with? So far I can't think of many. I drive my urq any chance I can. Two weeks ago I noticed my 94 S4 had a flat tire. Oh well, I guess I`ll have to drive the 83. Funny how I haven`t found the time to fix the flat.

20K is right at that mark where I'd consider it. But I wouldn't really call my car "nice." It's heavily updated and upgraded with big go, stop and turn. But it still needs cosmetic work, like paint.

auditurboquattro's car, however, I would call "nice." And it's worth every dollar of that 20K, in my opinion.

Well, it depends on if your decimal point is US or Euro usage. ;^)

I'd consider selling my rally for about 100,000.

My street car i'd sell for about 10K as is (in pieces). :-)
I'm totally upside down on the street car. But when I'm finished with it, it'll be worth about that or maybe a bit more. 034EFI 10V with a magnesium cam cover and Intake manifold! I'm going to keep the solid lifter head.
Probably fabricate a tubular exhaust manifold that looks like a rally 10V type. And then bolt on a GT30R.