Retiring and have a 15 ton HECO lattice boom crane built in Sherman, Texas in the 1950's Has a GM 6 cylinder in the carrier and a Waukesha 6 cylinder in the crane. The carrier was built by Crane Carrier Corp and is on Rockwell axles, front is a 2019 steering axle not sure what number the rear axles are. Two speed transfer case. This crane was running less than 6 months ago. Would make a good yard crane or an interesting piece of crane history. Have 100's of spare parts for these cranes, my father bought out the remaining stock of parts when the manufacture ceased production.