1.Doing a Ring and Pinion install or just replacing / upgrading your flange / yoke. 2.The This is fabricated from huge 3/8" thickness steel, CNC laser cut. 3.Slots accommodate most popular yoke/flange patterns - it's compatible with the Ford 7.5, 8", 8.8, 9", 9.75, IRS & straight. 4.Compatible with Dana / AMC / Jeep 20, 35, 44, 50, 60, 70, 80 & Chrysler 7.25", 8.25", 8.75", 9.25". 1310 1330 1350 yoke. The GM 7.5, 8.5, 10.5, 11.5, 8.2, 9.25, 9.5, 10 bolt, 12 bolt, 14, bolt.