Where can i find reference pix of this type of engines

[Lonewolf]

http://www.pins.hr/images/motori.jpg

the one in the middle would be the best

i think its a terex engine but i cant find good pix

[Taz]

Google "Cummins engines". I don't know the model number for the middle one,
But http://www.cummins.com/ should have it somewhere. If it doesn't it should still provide some decent ref. :)