All factory M22 are going to be 26 spline so depending on the clutch you have on hand you might just want to upgrade that after looking at you signature. Also, the close ratio of an M-21 or M-22 will probably be preferred with you rear gearing. Depending on the prices people are asking you might (and probably will) be better off looking at a new AutoGear transmission. I have one of their wide ratio rock crusher transmissions (I have 3.90:1 gears) and have been very happy with it since 2008. -Jesse