Check this one out:

Six wheel Land Rover diff lock demonstration by Trevor Alder - YouTube

 

Same guy same vehicle doing power slides:

Six-wheel power slide in 4.0-litre V8, Land Rover Discovery - YouTube

 

I do like the thought of these 6x6 Land Rovers and this is what I have planned for the future, hope you like the Picture. Sorry for the crap cutting and pasting but I think you will get the idea of what I'm gong for, the pickup is not to scale but I'll be going for an 8ft Hi Capacity pickup bed made by my self as no one to my knowledge sells 8ft beds lol.
cheers ALAN

 

If that is what you want, then by all means build it. I'm not criticizing your idea, but I am a bit curious, why?