OER Parts offers a wide selection of Plugs & Wires for your 1976 GMC All Models. OER Parts offers 1976 GMC All Models Accel Shorty Spark Plugs, 1976 GMC All Models E3 Spark Plugs, 1976 GMC All Models MSD Spark Plug Wire Set, 1976 GMC All Models Accel Spark Plug Wire Set, 1976 GMC All Models Taylor Thunder Volt Spark Plug Wire Set, 1976 GMC All Models Pertronix Flame Thrower Plug Wire Set, 1976 GMC All Models Cool-It Plug Wire Sleeve Set, 1976 GMC All Models Spark Plug Wire Puller, and 1976 GMC All Models Spark Plug Wire Tester.