I just thought this was interesting and maybe a repost, but Psi-Fi took a supercharged mini cooper and then twin turboed it. Now I gotta admit, that's badass:
http://******************/showthread.php?t=432
Sounds like fun and costly, but fun none the less.

 

Yes Psi-Fi has pointed out its twin charging system, sick video tho! Imagine that thing under the hoods of our brand new Cobalts

 

heard lots of talk but thanks for the vid. Instant power from the SC, then the turbo spools up and wow... that BOV sounds like a cracking wip. i want to see a vid of that in a Redline, he's working on it now .. i can't wait to see numbers.