JW -- Sorry for the delay. But yes, I found the Juliano's kit instructions pretty easy to follow. All I had to actually think about was where to drill the holes and even that was fairly intuitive.
Norcal -- For the upper bolt, I drilled the hole and, using some coat hanger wire and hand gymnastics, positioned the anchor plate behind the inner cab wall (as depicted in the photo). As soon as the bolt threaded into the caged nut, we were in business. Torque did the rest -- no need for welding. But I'll admit -- the first one took about 30 minutes. The second, though, took about 5 minutes

Cmayna -- Corner glass ... Hmmmm -- I'm just a lowly, cheap-beer swillin', 3-window guy.

Maybe someone with a 5-window cab can chime in?