In Hot Rod Garage episode 25 Tony Angelo and guest fabricator Colin Jones pull a 12V Cummins diesel inline-six out of a 1995 Dodge Ram 2500 and install it into a 1973 Dodge D200. They are calling it Project Rollsmokey.
Update 9/10/2015 – The team upgrades the engine for more power.
Update 1/13/2016 – The team upgrades the suspension and rear end.
Source: Hot Rod Garage Youtube playlist and Facebook page