Originally Posted by Icewalker
You may want to fire out some of these questions over at dweb - the fountain of knowledge for all things discovery.
A few people have done the engine/box conversion on Defenders but I haven't heard of a Discovery conversion.
Why not stick with the Rover v8? A good set of heads, cam, exhaust manifold and intake should get you to 250 reliable BHP with no real loss in mpg. After that you could always add the Janspeed turbo kit or a supercharger.
How much power do you actually need? These are off road vehicles not race cars
320 hp and better fuel economy than the Rover motor..
Seems obvious to me