Lots of parts sites will have part diagrams like the one linked below (I just keep this one bookmarked for reference when I need Part #'s). Than I search google or call the dealership to confirm it is the part I need (IE primed vs textured).
Below is taken from a prior thread I also bookmarked - so can't take credit for it. All of the parts to make it look like and Overland are not too cheap. Plus you need to pay to paint them.
I also have a Limited and currently have the fender flares incoming right now. Spent the day shopping some quotes to get them painted to color matched in the next week or two.
2014 Overland Paintable Wheel Flares $281.12
5JQ75TZZAA Left Front Wheel Flare
5JQ76TZZAA Right Front Wheel Flare
5JQ77TZZAA Left Rear Door Wheel Flare
5JQ78TZZAA Right Rear Door Wheel Flare
5JQ79TZZAA Left Rear Quarter Panel Wheel Flare
5JQ80TZZAA Right Rear Quarter Panel Wheel Flare
2014 Overland Paintable Body Parts
1WL30TZZAC Front Lower Bumper Cover $237.60
1VQ68TZZAA Rear Lower Bumper Cover $188.10
5PU65TZZAB Left Rocker Molding $135.00
5PU66TZZAB Right Rocker Molding $115.20
Most of those larger pieces have a "core" charge of $100 tacked onto the base price. IE you need return the original part you are replacing to the vendor. From here they give you the "core chare" (or deposit back).
Personally, I ordered by rear lower bumper from the dealership. It cost a bit more than the online sites, but I didn't have to deal with the hassle of shipping the original part back and waiting for them to reimburse my card. I just walked into the dealership and dropped it off. Clean and easy.