I bought my 2000 sahara 4.0 this summer off craigslist and noticed that it came with a unique set of bumpers on it and I was wondering if you guys could help me figure out what these pegs are used for. I have included 2 pictures and I assume they are for some sort of overhead rack, but can't find anything else online. They are located on all four corners of the Jeep, 2 on each bumper, about 2.5" wide and 7'' tall. Anything helps!