I don't have a write up, and mine was kind of a strange install as I first had it installed on my 2001 SLT. When that was totaled, I removed it, completely reinvented it, and installed it on my Denali. If you look under the front of your truck, it most likely has a plastic skid, or rock plate. I made a 12AWG steel skid plate for in front and behind the tie rods. It mounted right under the oil pan. Well on the Denali, you have a differential for the AWD which was completely in the way. So the back skid plate, I had to cut into 3 pieces about 7"x 14" and weld them to the front skid plate.
Now I have 4 horns at the front bumper, the compressor is also behind the front bumper and is isolated by a rubber membrane. That makes it super quiet from inside the truck. My biggest complaint on my SLT was that the compressor was mounted under my spare tire and it was loud inside the truck. Now the tank is a 3 gallon and it is mounted at the front of the passenger running board. It's a tight fit, so I used a step bit, and had to drill a small hole through the body mount, then attach the half inch main hose that feeds the solenoid through there. All in all, it took me about 10 hours on a Sunday to install this one, and keep in mind that this is my second time doing it. So I'm an expert... HAHA. This one was pretty challenging mainly due to the AWD on the Denali.
The best advice I could give is measure out the best spots to install, compare to the size of equip you want, and make sure it all fits before you buy. It is defiantly not for the faint of heart. I have a cutting torch, mig and tig welders, and an abundance of free time on the weekends. I will post photos later
-R
