[JSPERFORMANCE]

Did you forget what I told you? The aluminum center section is really only for lightweight purpose built race cars. With a iron center section the weight savings are minimal if any at all. The m9 uses its own torque arm assembly and does not use any of the stock arm geometry. Also there are no provisions to run the stock rear sway bar. You already have a 12 bolt, the problems you are having are most likely a gear issue, which can happen to any style rear differential. Do what you want but you will definately be spending alot more money and alot more agg going to the M9 rather than repairing the 12 bolt you already own.