This is a GN1Performance "3" Cat Back Dual Exhaust System" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. This kit comes complete with custom mufflers, clamps, and hangers which is everything you need to bolt this kit on your car today! This kit is a direct "bolt in" no welding or cutting is needed! The system is constructed out of 304 stainless steel and features a high polish finish. This is the baddest Exhaust system on the market for your Grand National and the price is unbeatable!