Check this turbo K-series car out. It's insane.
http://www.k20a.org/forum/showthread.php?t=51021
http://forums.clubrsx.com/showthread.php?t=542199

One of the posts mentions it made around 923 at 32psi.
Also that it was running consistant 9.8's @ 148mph on 30psi

Still has a stock head on it.