Kooks Custom Headers is a name that stands out as being one of the top manufacturers of headers and exhaust systems in the industry. We're proud to not only offer their products here at Lethal Performance for over a decade but to have used them on several of our shop cars as well. Kooks Custom headers offers several different styles of longtube and shorty headers, catted and offroad midpipes, axlebacks and catback systems. The fit and finish on Kooks products is excellent and the T304 stainless steel they use is designed to perform great and last. All Kooks custom header setups we offer for the 2018 mustang GT include all of the necessary hardware for installation. If you're looking for a bad ass exhaust upgrade make sure to checkout the offerings from Kooks as we're confident they have what you're looking for.