Kooks Kooks- 2005-2010 Mustang GT 2-1/2" SS CATTED X-PIPE 2-1/2" x 2-1/2" (OEM) Catted Stainless Steel X-Pipe. 2005-2010 Ford Mustang GT 4.6L 3V. 2-1/2" 16GA 304 Stainless Steel construction Ball and socket style connection to Headers KOOKS Standard 300... MSRP: Was: Now: $1,341.65 Add to Cart