Well, the boys at ATP Turbo took the drop-in replacement Garrett Evo X turbo, took out the GT3076 wheels, and stuffed in the wheels from the GT3582.  The car moves pretty well:

http://www.youtube.com/watch?v=MKq3E1529jU

The engine is completely stock internally!  Stock cams even.  Stock exhaust manifold.  I wonder how much power it would gain with a nice tubular manifold and some cams.  Then I wonder how long the stock rods and pistons would last.