@ZKM..... Basharatu has explained rightly.... just to clear you.... Pakistan Army only has 3 Unimog version:
1)421.128
soft top, troop carrier, (called 1.25toner in Army) 102inch wheelbase, 2.4L, 4cyl, 65HP, Torque 145nm
2)421.129
Hard top, Ambulance (camper), rest is same as 421.128
3)416
Hard top with daala (called 2.5toner in Army) 114inch wheelbase, 5.7L 6cyl, 110HP, Torque 314 @ 1600RPM
you have to fore go your desire for one.... either double cabin or camper. i would suggest go for Ambulance model....
or else import either Unimog 1550L or 1300L a true double cabin camper ever made....