The sidewinder header is a newer style of exhaust system that is extremely well designed and hidden from sight from the rear of the vehicle. These systems are only available in the popular 1 5/8" diameter mandrel bent tubing from TriMil in the USA. The fitment and quality is extremely good and the power from these type of systems is very impressive. The mufflers are quite yet have a beefy sound that can be used for everyday driving.