I saw plenty of those back in my wrecking yard days, I should have squirreled every piece away.... The engine is the Renault J8S.
I once sold a good running engine to a customer that was going to swap it into his Mail Jeep, never did find out how that went.
The 1984-1985 Winnebago Le Sharo and Itasca Phasar RVs had the same engine, they were built on Renault Traffic Chassis. You can find parts, complete motors, etc on many RV sites still. Seems they have quite a following,
http://www.lesharo.com/I see complete RVs for sale cheap allot for $~$2000 that "need work"
Like this
http://valdosta.craigslist.org/rvs/1077289956.htmlBack in the day when a Cherokee TD would come in with a bad motor the mileage was always less than 100K and the head / gasket was blown, rod thrown, turbo destroyed etc. Everyone always thought the Renault design was junk. I was never convinced . In that era every passenger car diesel seemed to wind up in the yard that way, exploded with 50-80K on the odometer, with the exception of Rabbits. Initially I thought it was bad design.
Then I realized it was bad ownership. Most people that bought diesels back then didn't understand the difference between the gas brethren. A diesel (esp in the 80's) needed looking after, care, regular oil changes, and proper operation. VW rabbit owners on balance got it, and I think that is what made the difference. Just to make my point, the TD Jeeps are like hens teeth around the U.S., while there seem to still be plenty on the road in the U.K.
Big thread with lots of info here,
http://biodiesel.infopop.cc/eve/forums/a/tpc/f/584104603/m/1521048841/p/1Since the body is basically trashed, take a look around and see if you can find a
Jeep Comanche Pickup that is good shape and swap the TD into it. It'll be a direct swap.