This is a new old stock molding that is GM brand and part number 328824.  This fits in front of the rear wheel house opening on 1973-1980 Chevrolet trucks.  This is 36 1/4" long and in excellent condition and comes in GM paper wrapper. Please see the photos.  This will be shipped in a rigid tube to prevent damage during shipping.   Buyer to pay shipping and also Va. sales tax if Va. resident.