The front fender uses a steel mounting bracket, the driver's side on mine was badly corroded, fortunately it didn't spread to the body. I replaced them with a thin strip of aluminum on both sides. The fender flares are held on by screws accessible under the lip of the fender. The rear ones required me to take the tire off to make access easier.
The side and rear kick panels are bolted, clipped, and have sealant tape at the top to hold them in place.
If you need photos let me know, I'm stripping mine down to install a mossy oak vinyl wrap over the car except for the flares and kick panels that I'm painting.