Outer Limits 4x4 Board

I am trying to re-configure my air intake pipework and filter arrangement on my GQ and have been told that a Range Rover air box might be a good addition. I believe the one I've been told about is off the RR Classic and is a cylinder with inlet/outlet on opposite ends. Would anyone be able to confirm this, and the size of the intake/outlet connections. Or better still could someone take a happy snap under the bonnet to show me.

Much appreciated

Steve