It should be the same as far as bolting up but you will have problems with the sway bar and locker. There is basically a 4wd position switch but it will not work on the Atlas, Advance Adapters is working on something but I dont know if they have anything available now. On our X with an atlas, the position switch is not used so you can now turn the esp off at anytime so it must think it's in 4wd hi all the time. I would try to disconnect the swith and see if you can engage the lockers and disengage the sway bar and turn the esp off.
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