My YJ had a 3" BL on it when I bought it. The PO welded the steps bars just under the body on the frame, so I can't take the BL off until I cut the step bars off. When I do, I will remove the BL and replace with a 1" or nothing at all. My suggestion is either do a 1" or nothing at all. nything more is a PITA and doesn't look good in addition to being virtually useless. Nothing had to be altered with the one on mine the best I can tell.
2013 JK Unlimited Gecko Green, 4" Skyjacker lift. Pro-Comp 35" Xterrain tires