I don't know if this site will help, but it's worth a look.
But I think 1600 is a little skimpy. The shelby is a classic, especially in good condition. I would get it appraised by a dealer who specializes in classic cars, and then try to sell it.
Personally, I would enjoy having such a rare, sweet ride. I have 40th anniversary mustang, and have been a big fan the 'stang since my first b.f. picked me up in his bright red 5.0 fourteen years ago. The shelby makes my mouth water!
Good luck, and enjoy that bad boy!