Well, I emailed Force Turbos to see what the skinny is on their turbo kit for the Defender.
The Defender in the installation instructions showed that it had the same tracks on it that I do, so I am hoping that they have some data, that shows the gains achieved with a turbo.
At altitude (4000') and up, I am sure that it would be a benefit, but before I send them $4K, I want to know that it will do more than roast tires....