I don't plan on using it without a front, plus, I lowered the car in the rear with 1" lowering blocks. It has the XHD +1" and they were a little too high for me. Now it sits just right. But you're right, sometimes, especially with a light car, a bar on the back is overkill. It's gonna get one on the rear, I just need to be careful about the size.

I would venture to guess mopar guys don't need a rear bar. Its very common to have high ride height and/or springs in the rear that are too high rate. The best thing to do is test. If you are lucky enough to be able to drive in a large circle with increasing speed, you will find which end lets go first