Spacers on Front only?

96 XJ - 3" lift with 31x10.5 ProComps on TJ rims

I added 1.5" spacers to the fronts to allow me to turn stop to stop without rubbing the control arms. (I wanted the small turning radius)

Is there any reason alignment-wise that I would need to space the rears out as well to match the track on the fronts? I have heard different opinions on this.

In my experience no, I know the chevy blazer 4x4's were intentionally built like that so the front and rear tires arent always following the same exact track, but I dont see how it could be a prob.

X2 it will be fine.