I was doin my weekly ebay search and spotted some B parts listed as A parts, the seller claims not to know what he has. I spy a "C" crank, B rods and a B cam. I would assume that the pan is also a B. http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2446598513&category=34202&rd=1 If you live near PA, I would take a chance.