Earlier quoted context omitted.
At the time I thought it made sense... of course hindsight is great. If I wanted a Toyota diesel, I would have just bought a Toyota, but I didn't want that. The reason for the merc is that the engine I chose (the OM606) is the most sophisticated non-computer controlled diesel possible - actually it came from the factory with a computer, but by using the injection pump from the earlier OM603 it can be made fully mecha…
Why not just swap in a new motor at that point instead of getting a whole new vehicle? The long block should be pretty plug-and-play since all the adaptations had been done already?
Even if the engine didn't blow up, there was still months of work to iron out bugs.
After the hard miles I've done here in Africa, I'm actually immensely happy it didn't work out, and that I have a factory drive train in my Jeep now.