Ya I think it was a uni. He had it repowered with an early Cummins I think. Don't know my diesels too well.
i know a guy who has a diesel in a dodge bros roadster/truck.he also has one in a 65 (i think it was) f250 camper special that he installed back in 1969.
Here's mine,couldn't take as many as I would have liked. My camera battery wasn't up to the task apparently... http://www.flickr.com/photos/notablazer/sets/72157622433195303/