Originally Posted by BLKNBLU

He already has a "real" lift kit.

To answer the question, I think 4 hrs might be cutting it close, but I work slowly and methodically, because most of this stuff I do is for the first time. Also you will have 2 people, which should speed things up nicely. I only put on a 1" so I didn't have to deal with the shifter stuff and the steering was easier as well. Still, it is a pretty straight forward procedure. And don't worry about the 3" comments. Roger wouldn't sell them if there were problems and I believe he runs 3" on his own rig so he would know.