The stock cast aluminum bellhousing is adequate for OEM applications, but mounted behind a high horsepower - high RPM engine, the cast aluminum bellhousing could become deadly shrapnel in the event of a clutch/flywheel explosion. Hydroformed from premium quality steel plate to ensure uniform thickness throughout for superior strength. Stress relieved after forming results in a stronger, safer bellhousing. Mig-welded threaded inserts for transmission mounting bolts, clutch pivot ball and clutch linkage brackets where required. Precision machined to assure proper bolt hole and center bore alignment. Blanchard ground mounting surfaces for precise parallel alignment of engine and transmission. Dedicated applications assure a direct fit for all popular passenger cars. Approved by all major racing sanctioning bodies and meet SFI 6.1 specifications. Complete with safety block plate and grade 8 hardware. Fits 1979-93 Mustang/Capri with 289-302-351C/W. Notes: Designed for factory cable operated type clutch. (1) Due to very close tolerances, bellhousing must be dialed in to ensure proper flywheel clearance. (3) On all 1981 and later Mustangs, we recommend upgrading to a Hays part no. 76-228 heavy-duty adjustable clutch cable and billet aluminum clutch quadrant. Transmission Factory 4-speed (single rail overdrive); Tremec TR3550/TKO TR4250 Richmond 5/6 speed (p/n 7041711, 7041610) 7.200" Input Shaft. Bore Diameter 4.850. Depth w/Block Plate 6.924. Fork Opening 2.15 x 4.15.