I was thinking the same thing. I do have plenty of room under the bay though, there's a big spot where the stock air box was that even has some fairly heavy duty bolts I might be able to use to mount a fabricated bracket. It's probably too big of a project for me but sometimes that doesn't stop me ;-)
A roots should really sit on top of the intake not on the other side of the hood. If you want to do that then a centrifugal would be better.