Need some help from those of you who have installed the Smittybuilt rear bumper. Ok, so I got my bumper installed, I installed the frame tie-ins, but it seems like they have two sets of them? I have never seen pics of anyone installing both of these. Also, they make it seem like you only need to drill if you have a YJ, well, I have an LJ, and I would also need to drill for the second set of brackets. Do you guys think the second set are really needed? (Step 8, and the brackets pictured on the right are the ones I am questioning)