1971 GMC Conventional Models Series 9500 Sales Brochure. GMC goes to any lengths to serve your hauling needs. Features 95-inch and 114-inch BBC Heavy Conventionals. Mechanic's delight. You will too. Tip-off hood, chair-high seats, and rear air brakes. Sturdy cab construction stands up to years of strenuous service. Also covers interior, chassis, and engine options. Specifications for single and tandem axle. Good condition with minor wear and soiling.  Adv. 71-- 10 --(8-70)