Ford, Small Block Down and Forward Turbo Header kit. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. This kit is designed to fit the 1979-93 Fox Body Mustang with 9.5" tall deck Starting with a CNC cut 3/8" thick flanges into 1-7/8" diameter primaries, flow into 3" slip-fit collectors. Flange is HFSBF2-188 in this kit. 3" V-band Flanges and clamps are provided and welded on for both Headers to Crossover connections. Complete system is TIG welded and back purged for maximum performance. kit includes headers, 3" stainless steel crossover tube with 3/8" stainless steel turbo flange welded on to outlet. 7 gage stainless steel Turbo mounting bracket, 1/4" thick Aluminum motor plate, and downpipe which is coned from 5" diameter to 4" diameter with a 90? bend and 12" min length leg on the outlet side. (Customer is required to provide 5" V-band Flange for welding to inlet of downpipe.) An oil filter relocation kit is required for installation. Mill finish, These, are TIG welded for strength and durability. These kits come with a lifetime warranty and proudly made in the USA.