Parts & Accessories Spare parts Peace, mercy, and blessings of God be upon you. I have 1979 GMC parts: Engine and gearbox Cabin, bed, doors, and fenders Cabin belt Front bumper Rear bumper Gas tanks (right and left) Differential with springs Brake discs with calipers (set) And a set of rims Steering box 454 springs Two sets of 350 springs Brake booster And other parts are available.