Mine were the .188 wall with a full top plate (HEAVY). I was able to install them with the help of one more person, a floor jack, and two jack stands.
Both people pick up the slider and set it onto the floor jack
One person balances the slider while the other jacks it up
Get it close to position and put the jack stands underneath to support it
Fine tune location and bolt it up!
Took me ~30-45 Mins per side to get them on. White Knuckle made everything pretty straight forward. I had to request it but the front mount fit perfect with the Carli radius arm drop bracket! The front mounts did slightly make contact with the body. Not enough to not be able to install the sliders but enough to cause squeaking. I "massaged" the metal out of the way with an air hammer and hit it with rubber undercoating. This took another half hour or so.
As
@Explorerinil said, take out the bins/coolers before hand. I removed both. It makes it easier to fine tune where the sliders mount and after they are bolted on, you can reinstall them. This also gave me time to add foam to the outer layer of the box that you don't see (you will see what I mean) to provide more insulation for beverages.
Another tip I received which I found helpful was to mark with a piece of masking tape the center of the cab and another piece to mark the center of the slider. I am a little OCD and needed both sides to match