1972 GMC Trucks Series 7500 Conventional Models Sales Brochure. Reduced Cab Weight...Increased Payloads. Rugged...Long-Life Cab Construction stands up to years of strenuous service. We build a truck that's tough-yet easy to service. Hard-working chassis. Power to suit your application. Specifications and dimensions. Condition: Some rust on staples. Otherwise in good, clean condition. See pics. ADV 72-9, 8/71