I have been speaking and emailing 3 different aftermarket dealers and I am really confused. I want to put a locker in my rearend, and I don't want to switch to Toyota or Sammy to do it. I spoke with Roadless Gear and they said that the locker they sell is interchangeable with the Sammy and SJ410. Hawk Strictly said that was not possible, and didn't believe there was a locker available for an SJ410. Rocky Road says they have one for the SJ410. Has anyone done anything like this?