Kooks Headers & Exhaust: 2005-2010 FORD MUSTANG GT 1 5/8" X 2 1/2" HEADER 4.6L (MANUAL TRANSMISSION) step we’ve kept the calibration quality

we’ve kept the calibration quality air fuel ratio meter made by ECM going strong

Flow Increase  = +41

Stainless Steel Aircraft-Quality ARP Fasteners

and I-beamed spoke spans to deliver head-turning good looks with track-ready capability

I can do that no problem

Kooks Headers & Exhaust: 2005-2010 FORD MUSTANG GT 1 5/8" X 2 1/2" HEADER 4.6L (MANUAL TRANSMISSION) step we’ve kept the calibration quality1 5 8" x 2 1 2" Stainless Steel Long Tube Headers For use with Manual Transmission Must be used with Kooks X Pipe or H Pipe O2 extensions, gaskets, and all installation hardware included These products are NOT legal for sale, installation, or use on a licensed vehicle in the state of California, and they do NOT meet CARB compliance SPECS: SKU 11312000 Order 1 Year Range 2005 2010 Engine Type Ford 3V 4. 6L Unit Pair Weight 32 lbs VEHICLE FITS: 2005