My SCCA ITA 1988 CRX met a hard end last fall. The tub is basically stripped but the cage is fine and is worth salvaging for a lemons car or similar. Here's the craigslist link:
http://detroit.craigslist.org/okl/zip/1755673965.html
Catch is you have to pickup (metro Detroit area) and take some of the broken junk that's inside (couple tires, bumper, subframe, rad, etc)....and it has no wheels or suspension whatsoever.
Thanks, Alex