I've seen some pretty tempting deals on clean, used 404 Unimogs on the internet. I'm a little concerned that a 2.2 litre gas engine in a 6,000 lb plus truck might be a tad performance deficient. What other engines have been substituted with success? A larger Mercedes diesel,such as an OM617 comes to mind. Perhaps a powerful and easily obtained American V8 would suffice. Any ideas? I was just imagining a wicked 'Mog with a built Chrysler 440...2 four barrels...maybe a blower...big tires..running over one of those sissified fake H2 Hummers. What kind of monster 'Mog could be built using one of those $7500 specials and a welder?