I don't have a close up pic of the skid plate..but downloaded this from Rugged Ridge.. not my Jeep ...(their part number 18003.30
After I installed the RR XHD front and rear bumpers, I noticed quite some "sag" with the stock suspension.. Then I decided to go with a OME lift, Nitrochargers, JKS track bars and Teraflex lower front control arms to bring the caster back to where I liked it.
Also got rid of that flimsy steering dampener and installed a BDS one..
I don't believe in spacers as you are NOT doing anything towards the spring sagging.. The ride will also be harsher as you are down on the spring compression..However a BB is the cheapest way out..
Here some more pic's of my ride