I just bought these headers from Pypes, and realized that my student loans are going to be due soon. I won't be able to have a shop install them for a while. These headers will fit 96-04 Mustang GT's with the 4.6 SOHC engine. They will both auto and manual, but the auto will need to get a new linkage kit. The headers are fully stainless steel and are very high quality. One of the pictures below shows the welding that was done, just to show the quality of the headers. They are in perfect shape with the exception of one small dent on the passengers side from shipping. I am located in Owego, NY. They also come with gaskets and bolts to install. I would like to get $250 plus shipping for them. They are 379 on American Muscle. http://www.americanmuscle.com/pypes-long-headers-96-04-gt.html