****** located in tx****** 1977 Cat D6d. 653 hours on Longblock from Caterpillar, receipts for prove. Undercarriage was recently replaced when we bought the dozer, just 50 hours before the head blew. We ordered a short block, and the long block came in.. they said they could send the long block back and order a short block, and we said no and just had the long block installed. Put a new turbo, and new radiator, and misc hoses. Has rippers on back. 3 shanks. Has cab, and brand new a/c unit. new glass all around