I'd probably put it in the mid 20's. I definitely feel if that car was listed for $20K it would sell in a minute.
If it's a dealer, they probably offer financing, which means someone will buy that thing at $500/month. It's easier to finance $36K than it is to plunk down $20-25K in cash, although today's interest rates are probably going to change that thinking as well.
I can't pick it apart too much. I'd rather it have stock gauges, and a stock radio, and at that price point, it should have rear disks and not drums. I'd also need a paper trail for that mileage. Carfax or inspection reports. Car looks great, but I would not want that to be a 209K or 309K mile car, despite how well it's been torn down and rebuilt.
May sound snobbish, but when you start talking $20K or $30K cars, that price needs to be justified. I'm not saying $36K is not justified, but at $36K i'd be looking at a Saleen or 93 Cobra, or a Terminator or S351 or something like that.