Saw this on ebay tonight. . .probably not HG, OC-3, OC-4 & General related, but this is the forum I hang out on the most and I'm guessing someone will have an educated opinion as to what it is (or was)
http://cgi.ebay.com/OLIVER-CRAWLER-DOZE ... dZViewItem (http://cgi.ebay.com/OLIVER-CRAWLER-DOZER_W0QQitemZ330208087147QQihZ014QQcategoryZ58188QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)
It looks like a modified OC6, possibly equipped with a Ware loader at one time.
The finals ,sprockets ,and front idlers came from an OC3 or OC4. The engine and hood look like a Farmall H . This is the most modified Oliver that I have ever seen .