What does this have to do with the thread?
As for the original question, would you be using the SUs if you go carbs?
Heres a few links. Ones EFI, ones carbs.
http://forums.hybridz.org/showthread.php?t=136423&highlight=dum-bass
http://forums.hybridz.org/showthread.php?t=153777&highlight=supercharged+l24
And as mentioned, search some more. The stuff is out there.
As for your power goals, 500 whp will take alot of work. It wont just be a matter of bolt it on and turn up the boost.