Thanks everyone for all the advice. I've gone ahead and listed my car for sale on Zilvia.net.
Unmolested 1989 Nissan 240SX 5-Speed Coupe - Drives Great, Clean Title (WTS/For Sale) #/f/showthread.php?t=568829
I couldn't bring my self to ask for $5,000. Or more. But I am emboldened to hopefully get what some of you think my car may be worth.