http://thisoldhonda.org/ads.php
Quick search, so don't expect it to be perfect, it just popped up this site that should be of some use. Autotrader had nothing in the classic section and only two Civic's in the '81 - '83 parameters. I'll be of better use when my mouse gets recharged, I was that dummy that bought a rechargeable mouse instead of using AAA batteries, Doh!