Cummins 2.8T Turbodiesel swap kit for older Jeeps, 4x4s & ?
 

I shot this at the Overland Expo last month. Huge potential for MPG improvement on older Wranglers. There were two 2.8T swapped 4x4s at Overland - a Jeep TJ and an International Scout.

https://www.youtube.com/watch?v=3TyKnfLuFNs

This engine is currently factory-fitted to the Ford F-350 in my home country, coupled to a 5-speed manual transmission. Even though it might sound underpowered at first for a full-size truck, it's still suitable for almost every application where a V6 or V8 gasser is used.