Anything to look out for on the high milers?
Only the same as others - worn clutch and turbo might need a bit of TLC but they generally tend to be robust engines 
Cheers pal what sort of things would I need to do to give the turbo a longer life?
First check for side to side movement in the shaft, if there is any get it refurbished - its much cheaper to do before it explodes.
When you've been driving don't just stop and turn the engine off get it a min or so for the turbine to slow.
Change your oil and air filter on time.
Enjoy the beastie, they are a great engine
