He is SAS'd. thats a totally different story. Hes probably got between 10-12" lift on 37's.
This is what you're looking for: http://www.summitracing.com/parts/PRA-70033/
It's a 3" body lift, so there is no ride difference. The lift basically puts spacers between your body and frame. It's not too difficult to install. This is really the only one you'll find, its what we all use, I put it on in my driveway in about 6 hours.
Your other option would be suspension: spindles up front and blocks/shackles out back.
Just search for it, theres thousands of threads out there about this.