There were a couple/three posters with superchargers...
Kirk has a supercharger I think, from my fading memory of
WestFest,
...he does have a Titz X5. See link and
chase him for more info and real world tips:
http://www.xoutpost.com/members/62/kirkx5m.html
But, for 6Gs,+++...I'd trade it, throw the 6Gs in, and
get a nice used Vette or, or, or...any of which will be
a lot faster, much better handling and more fun
than a sling shot X, but that's jes' me.
GL,mD