Grim Reaper said:
Those are about as Turn Key of a Dakar race truck as you can get.
That is probably the 4.2l Supercharged V8 in that truck.
More info here.
http://www.bowler-offroad.com/
From the Bowler web-site:
"In most other ways, Nemesis is based closely on a standard Range Rover Sport. Wheelbase is standard, and the engine is a shorter-stroke 4.0-litre version of the 4.4-litre normally aspirated V8. The engine is largely in production trim, with the same aluminium heads, aluminium block and majority of internal components. Maximum power is 300bhp, identical to the normally aspirated Range Rover Sport V8. For some specialist national off-road racing series, Bowler will introduce a 550bhp supercharged version."