Rubicon backspacing

I tried searching but couldnt find anything. Does any one know what the backspacing is on the Rubicon wheels? Ang how well they will fit with 2.25" of lift and 2" bump stop extentions?
Thanks Rob

Rubicon rims are 16x8 with 5" backspacing. I can tell you that they fit with a 3" lift with room to spare, so 2.25" inches should still fit fine. HTH!