Trail FX Tonneau Cover TFX6001, Manual Retractable,Key Lockable 1976 dodge charger base esi4476552 It includes a merge X Pipe BDVK_752954 It includes a merge X Pipe for increased performance and improved sound The performance matches the famous BORLA® systems of the past but with a unique muffler and exhaust configuration canceling additional high frequency sound waves delivering a significant increase in exhaust flow CFM from the factory system which TrailFX Hard Retractable Tonneau Covers are a feature packed solution to secure your truck bed while adding cargo carrying capability The T Slots built into the rails accept TrailFX cross bars