I just put on a set onto my 2012 WK2 3.6L Overland yesterday. Straight bolt on, no spacers, no rubbing. However, considerably more road noise than I was anticipating. Overall, pretty happy with the results.
Great looking rig!! I've heard that the wheels will straight bolt on with the 3.6, but since I have the hemi with hd brakes, it barely fits with the spacers! the road noise is pretty substantial, but I am only going to put them on for the winter. I'll go back to the stock set for summer.