Complete aluminized exhaust system for high performance "K" 289 cu.in. Mustangs. Diameter is 2 inches. This kit fits factory HiPo exhaust manifolds only. Available with or without resonators. Brackets and hangers not included. Note: Not recommended for Convertibles due to very tight clearances in Transmission Tunnel at Convertible Seat Reinforcement Pans and Reinforcement Plate. Modifications to fit Convertibles will most likely be required by an Exhaust Shop. See Concours Exhaust Systems for a trouble free installation.