304 stainless steel header is simply one of the nicest exhaust parts you will ever see. It features CNC machined flanges, stepped diameter equal length primary tubes, and a 3-into-1 merge collector to maximize overall power and performance. All joints are hand-prepped and sand rolled prior to the purge TIG welding process, so you get great looking welds and the smoothest surface possible inside of the tubes- just like our race car headers that have won hundreds of races across the country. You can expect up to a 12 peak and 18 midrange horsepower gain when combined with one of our slip-on mufflers, the High Flow Intake, and a Power Commander fuel controller- check out our Stage 2 Exterminator Kit to get the complete performance package. As with almost all of our parts, this header is 100% Made in the USA!