I did one of these years ago for myself (check pictures in the gallery) so this wasn't something NEW.  It was a pretty straight forward swap getting a 5.3LS, 4l60e, and push button transfer case.  Check out the gallery below for more details.

Highlights

• 1990 Jeep Grand Wagoneer
• 2001 5.3 LS Swap
• Swap old style front end
• Hydro boost brakes

Gallery