As one of the people involved with helping CRE going through the final stages of turboing a 7MGE, I can say I'm looking to go turbo and I'm not even considering using the 7MGE.
It takes more customization that I'm comfortable with right now and takes substantially more work in the form of research and actual labor making the GE ready to handle the drastically different conditions of a turbo'd powerplant.
If you want advice, I'd second the notion that a GTE swap may be a better alternative.
I'm planning my own GTE swap for this coming spring.
