S/N: 290576. 71' Main boom, 23'-41' two stage jib.ATB System, 'A' type front outriggers. ASH rear outriggers, Front outrigger, BSA-R1 Manbasket, 20' Steel treadplate bed, removable boom rest, Air shift PTO. 2004 GMC C7500 Topkick Chassis .. VIN: 1GDM7C1C94F507016. Cat C7 300hp Diesel engine. Exhaust brake. Fuller RT8908LL transmission, 12,000# front axle, 21,000# rear axles,50- gallon fuel tank, Air conditioning, AM/FM radio & all standard equipment.