Here are a couple of frames I found in just 5-10mins of eBaying..
http://cgi.ebay.co.uk/Sirius-Road-Racing-Frameset-Reynolds-531_W0QQitemZ150299871590QQcmdZViewItem?hash=item150299871590&_trkparms=72%3A1346|39%3A1|66%3A2|65%3A12|240%3A1318&_trksid=p3286.c0.m14 - dropouts look pretty small but you could convert it
http://cgi.ebay.co.uk/Raleigh-Road-Bike-21-inch-Frame-with-Matching-Forks_W0QQitemZ120313568399QQcmdZViewItem?hash=item120313568399&_trkparms=72%3A1346|39%3A1|66%3A2|65%3A12|240%3A1318&_trksid=p3286.c0.m14 - looks pretty much what you'd be looking for
@wibble started
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Here are a couple of frames I found in just 5-10mins of eBaying..
http://cgi.ebay.co.uk/Sirius-Road-Racing-Frameset-Reynolds-531_W0QQitemZ150299871590QQcmdZViewItem?hash=item150299871590&_trkparms=72%3A1346|39%3A1|66%3A2|65%3A12|240%3A1318&_trksid=p3286.c0.m14 - dropouts look pretty small but you could convert it
http://cgi.ebay.co.uk/Raleigh-Road-Bike-21-inch-Frame-with-Matching-Forks_W0QQitemZ120313568399QQcmdZViewItem?hash=item120313568399&_trkparms=72%3A1346|39%3A1|66%3A2|65%3A12|240%3A1318&_trksid=p3286.c0.m14 - looks pretty much what you'd be looking for