I bought a used SRT front and rear bumper off ebay and bought everything else new...I love the way the SRT looks but i'm not sure it's worth putting another 5K$ worth of stuff on my limited as it would be a total wash when I sell it..
i'm really thinking I'm just going to get an SRT next spring...so I may just sell off the SRT parts later....the black trim on the bottom of the sides are the "rockers" and over the wheels is the "fender trim" ...you can buy paintable flares from Just for jeeps for like $200 ....if you're talking about the lower part of the rear bumper on an SRT then you're talking about is this part
1 - 68157471AB - Lower Bumper Cover
LOWER COVER | Genuine Mopar | 68157471AC
I bought one off ebay NIP for like 150$
you'll also need new rockers...fender flares/trim and rear bumper ...like I got...
you'll need to buy new DRL LED lights+Projectors and those are another $850 ....its a very expensive conversion
I did an aftermarket Hood on my jeep and I kind of wish I had just gone with the stock SRT hood...much cleaner
I went with a Sarona Fiberglass hood...(mostly because of the DAMN acorns in the northeast..especially those that fall in my driveway)