Well surpise, surpsie it's not the turbo that is shagged. I have spent approx $2k on a new turbo - put it on and the noise did not change......................FFFFFFFFFFFFFFFFFFFFF
So took it back off to take a close look at manifold and it's leaking between the block and the manifold - this is what the friggen noise is.
6 out of the 8 studs came out sweet, the other two we are in the process of drilling out.
Plus I need 2 new batteries and the intercooler needs replacing as well
Truck will stay in the driveway till Monday - I'm going off to tuff trucks

OH THE HUMANITY!!!!!!!!!!!!!!!!!!!

Cheers
Nick