WW
As was said before, as far as anyone knows, the turbodiesels were meant for the US market only.
A Euro-spec car in general may have:
Manual climate control
Cloth seats
Euro lights and bumpers
Upon entry into the US,it would then have to meet US safety and EPA requirements that were in effect at the time.
A MB European delivery program car was built specifically with the intent of meeting US regs after cruising around for a few weeks in Europe. It was built with all the wonderful features that you have become acquainted on your 300D:
Pushbutton climate control
EGR
MB tex seats
Ridiculous US DOT lighting standards
This sort of car still had to meet German law that requires a safety marker that can be displayed in the event of a breakdown. You may also (hopefully) see a service record performed at 1000 miles somewhere in Europe (my part car got its first service in Heidelburg).
Good luck -sounds like a sweet deal. I vote for dumping the Jeep.
Rick