With a 455 (or no engine/trans at all), running preferably, repairable rust ok just as long as there's no completely rusted through panels, interior can be stripped/junk/etc, missing trim etc ok, for $800ish
needle in a haystack You are looking at 1995 prices and then they were hard to find 800.00 now will get you a shell that is rusted, but good luck and I hope you find one and if you do put it on the board so we can see that they are still out there :TU:
http://www.v8buick.com/showthread.php?t=75995 saw this one for a 72 in your price range, im sure you did too, but im just trying to help.dan