Carpet Kit For 1955-1959 GMC Pickup Truck, Standard Cab High Tunnel

55-59 GMC Pickup Truck, Standard Cab High Tunnel. This tunnel is approx. Unless specified above, this item will be made with Polyethylene backing. This item can be customized with Massbacking, which is a 40mil thick Ethylene vinyl acetate giving the carpet a more rigid and dense rubber backing to reduce heat and noise within your vehicle.