Tri-Y Stainless Exhaust Manifold Headers for Ford Mercury, Mustang, Cougar, 260, 289, 302,

DESCRIPTION Made of High Quality T304 Stainless Steel Material Reducers, Bolts and Metal Gasket Included 1.5 Primary Tube, 2.5 Collector TIG Welded CNC Machine Flange Increase High Flow Air, Instantly Gain 10 -15 Hp. / Tq. VEHICLE FITMENT 1964-1970 Ford Mustang 260/289/302 With V8 Motor Note manufacturer vehicle exceptions: These headers will not fit vehicles utilizing an FMX, C-6, or AOD automatic transmission May not fit some vehicles utilizing a C-4 transmission with 164-tooth bellhousing. Those using a 157-tooth bellhousing with require some clearance on RH side of bell Will NOT work on 351W motors. (Due to taller and wider engine dimensions) Will not work with GT40-P cylinder heads Headers will work with 10" or 10.5" clutch, use of a 1968-newer bellhousing will require clearance on LH side of bellhousing 1969-1970 model vehicles may require additional clearance for steering box Use of these headers on a non-HiPo model will require extra clearance for clutch li