That is the way dodge did it. I asked the same question over at Ramcharger central and they told me that it was done to help the turning radius? The track width is around 2" narrower in the rear compared to the front. It actually fits perfect with the wheels and tires that I am running. No rubbing or trimming needed. 8)
I remember when you first posted about this after you got it. Looks like you did a pretty good job. I see you opted not to go with the roll bar? Dude, C'Mon! Nothing says 70's Baja Truck like a roll bar with about 4 Hella's on it!