GMC Envoy Denali dismantling and spare parts. The engine is a modified V8 6.0 with a full sports exhaust system. Available: Original factory leather seats without cracks. Doors and interior/exterior trims. Original Denali grille. Depo headlights, almost new. Explorer electric fans. Wheels and tires, almost new. And all parts for the 8-cylinder Envoy. Engine, gearbox, differentials, body parts, and a custom-made radiator, almost new, larger and thicker than the original, holds more coolant. The gearbox is in excellent condition, 4 speeds, fits Tahoe, Yukon, Silverado, and Sierra.