Fitting a defender 300tdi turbo to a discovery 200tdi manifold

I've got a defender 300tdi turbo and actuator that I would like to fit to a discovery 200tdi manifold mounted into a series 3 109 6 cyli. According to the Internet this should be easy!!! Does anyone have any idea how to do this?

Or does anyone want to swap a reconditioned but slightly poorly discovery 200tdi engine with a 6cyl 2.6 engine so I can return the vehicle to its orginal spec?

Or does anyone want to sell me a 109 2.6 6cyl vehicle complete and running with mot?

Or does anyone want to sell me a 2.6 6cyl engine?

Or does anyone want 3/4 of a ton of frustration snapped!

Cheers in advance!