Maxtrac 1.5 rear spacer question

[Bluelinebuild]

I have not come across to much info on using rear spacers with factory rear shocks. I have a standard 4x4 bighorn, no ORP, and I would like to know if there are any issues running a rear spacer with the factory shocks. I am looking at the Maxtrac 1.5" specifically. I have the bilstein 5100s in the front and thought about adding the 5100s in the rear but even those only say 0-1" lift. Any help or experience on this would be appreciated.