Any issues with RIGID bumper and HD Eng boxes?

I ordered the RIGID RbM yesterday along with some Thor guards. Wondering what kind of clearance issues I will be looking at when I finally make it home to install the bumper. Will the shackle relocation boxes cause me problems? According to Terry it mounts up like a class 3 hitch. If i remember right i spaced my hitch down. I cant look at it for about a month... Im not exactly interested in spacing the bumper down... Thanks.

Other than the quarter cut and fold, it should bolt right up. The bumper ends do bolt to the stock shackle boxes but I don't think you'll have a problem with your r-brackets. You'll need the space on the shackle box toward the front of the jeep.