Fan Shroud/Air Ducting Refinishing and Repair Kits - OEM or Repro? If you have a late 50's thru late 70's classic or muscle car this is for you. Now you can reproduce the mottled gray look it had when it left the factory. Great on radiator fan shrouds, air ducts, Heater boxes and more. This Kit includes: 8 oz of Fiberglass Resin and catalyst, 9 square feet of fiberglass cloth, 2 prep pads, 16 oz of Cleaner, 1-12 oz can of Base Coat, 1-12 oz can of Finish Coat and instructional video - enough product to refinish 10-12 square feet.