I just wonder????? I know the drag racers tried it way back in the 60's. But
the "roots type blower used to much power to just add it to a turbo charger.
But the drag guys seem to have a handle on the Roots blower now.     6000hp
out of 500 cid

I don't know how it would do laying down though, or is the bellhousing would
fit......Lots of questions!
http://www.youtube.com/watch?v=20qqavckWdw