Are you kidding? He's running draw through. Even I could tune that in an afternoon with enough time for a run to Hooters. Plop a carb on a turbo and go.

If he was running blow through things would be different. Putting the turbo first really complicates the tune. That's when you have tuning issues. It's also where you start making power.

One thing he will have to watch out for is the altitude. 9000 ft is ugly. Temps tend to drop. When the turbo starts sucking air through that carb on a cold day he'll have to be careful. It can lead to carburetor icing. Hopefully it's relatively dry when cold up there.