Look at this thread. I think this is what you are talking about.
http://forums.vintage-mustang.com/forums/showflat.php?Cat=1&Board=forum&Number=420209&fpart=1&PHPSESSID=
http://forums.vintage-mustang.com/forums/showflat.php?Cat=1&Board=forum&Number=420209&fpart=1&PHPSESSID=