Hya,
Nope, not VW powered. I use the regular m180. its quite difficult(expensive to) to get an other engine road legal in holland. For us its easyer to swap to a m130 or m123 or m110 (if it fits) as long its a mercedes 6 cilinder gasmotor. My VOLKSMOG will be based on a volkswagen carroserie from a LT light truck on a 404 chassis. I am not that much in progress now.
http://people.zeelandnet.nl/rschra/LT-UNIMOG/index.htm First i have to rebuild an fiat 600 oldtimer for my wife:~(
http://people.zeelandnet.nl/rschra/fiat600/fiat600.htm
about VW engines, i think that the 5cil. 2.5 tdi will fit but is no good for a truck like a unimog. the 4cil. 2.8 tdi used in the newer LTvans will be better on torque. a good diesel engine to build in the 404 is a om602LA.
http://www.42-dont-panic.de/Unimog/O...7___om602.html I drove some U90turbo with that engine, and it performs really well. because of the high rpms of the engine i think more usable for roaddriving, for offroad better a high torque 4 cilinder (U130), om314 or the 6cilinders om352. the om352 will not fit a 404. and with the om314 the road speed will be to low.