Because of the factory 3 link suspension, you will need an adjustable panhard bar to re-center the axle.
I have the Pro Kit on my car as well, but I added a BMR Adustable Panhard bar. While I was at it I also aded BMR lower control arms and BMR reloaction brackets.
Theride is good but I think I am going to swap out the shocks/ struts for proper valved ones. I still have the stock ones in now.