I hope this gets a good home:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=250480615872&_trkparms=tab%3DWatching#ht_506wt_1101

Most notably, it has the elusive Daystar PPC card for the LC 575. Pop one of those babies in a Mystic Color Classic and you get both 33mhz 040 and 66mhz 601 PPC. I believe that's as fast as you can get without hacking or slashing the innards of a Color Classic.