"Even the Rover 3.5 V8 is only around the 100 BHP mark.."
Whilst I bow to your knowledge on trucks, your Landrover Horsepower is slightly selective. For your edification I cut and paste the following:
The Rover 4.6 underwent several changes throughout the years, which led to some changes in horsepower (hp) output. From 1996 through 1998, the 4.6-liter produced 225 hp at 4800 rpm. The 1999 model year saw two versions of the Rover 4.6: The base 4.6-liter delivered 222 hp at 4,750 rpm, while the Callaway special edition offered 240 hp at 4,750 rpm. The Rover V-8 produced 222 hp at 4,750 rpm from 2000 through 2002. In its last two years, 2003 and 2004, the Rover V-8 saw a decrease to 217 hp at 4,750 rpm.
Torque
As with the horsepower, the minor engine changes through the life of this engine led to variances in the torque output. From 1996 though 1998, the Rover V-8 produced 286 foot-pounds of torque at 3,500 rpm. In 1999, the base V-8 delivered 300 foot-pounds of torque at 2,600 rpm, while the Callaway edition figures were 280 foot-pounds of torque at 4,000 rpm. This engine produced 300 foot-pounds of torque at 2,600 rpm from 2000 through 2004.
Read more: Rover 4.6 Engine Specifications | eHow.com http://www.ehow.com/list_7428280_rover-4_6-engine-specifications.html#ixzz1BQAqnvoN