Do yourself a BIG favor. Get them powdercoated before you put them on. I got a set a long time ago from JCR offload. They don't sell them for the KK anylonger but I painted them myself with a few coats of primer, epoxy paint and truck bed liner. I find myself (in Michigan) having to clean off rust and re-paint them twice a year. I'm taking them off this summer and going to have them sandblasted and done right.
The style I have has the big square bar under the rocker panel and tubes sticking out a few inches that help getting in/out and I'm sure would provide some side impact protection if hit by a mazda miata or similar.
But here's something people don't think too much about.. Weight. Mine clock in around 50lbs each if not more. If you are doing this with 4 tires on the ground, get help, 2 floor jacks and a bottle jack. The floor jacks are easy to understand, the bottle jack, I used a small one to "adjust" the pinch weld so I could line it up with the bar's attachment rail that was just a fraction off. But, it took a good evening to get them on.
So, as you start adding these extra beefy items to your righ, here's my end result.
This pic was taken when I was screwing around with my 6 yards of mulch. Wife asked how I was going to keep the tarps on during the WINTER STORM we were getting for the weekend. This is the end result. (kinda gives a nice shot of the sliders too) (the door dent is complements of my son)
https://photos.app.goo.gl/cq9OnjgFZg6mUiJn1https://photos.app.goo.gl/07UAwK9jVfXFLOma2But take note, once you start adding all those cool attachments, you will see you MPG plumet. I drive short trips to work. 3 miles one way . I burn through a 21 gal tank of gas in around 250-70 miles. And thats taking it easy. Highway, I'm good at 14mpg. Windy days.. all bets are off. I have full skids, front steel bumper, class 3 hitch and the sliders. Sure, got the biggest tires I can put on it with my 1.5 inch lift but before I started changing the tire size, I got 26 hwy (running abt 1800rpm (about 65mph) and 18 city. Boy, those were the days... Clear to see why I was said to sell my 2013 VW Passat TDi back to VW. Really miss that 44city/60+ hwy MPG
Some extra shots: