NJC Pickups are very rare ex ambulance is your best bet and they are all left hand drive, a few peaple have modded them google mick the digger he's done a couple by moving the back of the cab forward but the genuine is flat back and gives more room on the back.
G Wagen/landrover vastly different, capabilities are similar but for different reasons, one is light and nimble the other is a tank with cross axle diflocks in the right circumstances both can excel.