There looks to be some lower track wheels for an A Cletrac on Ebay. Located in Minnesota. Price is cheap right now. Jump on it!
http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... %3AIT&rd=1 (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7545476305&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1)
(//http://i22.ebayimg.com/02/i/04/eb/b3/8d_1_b.JPG)