i remember following this back on lancerregister.com. Motor made 1000hp and then he sold it. More info can be found here in post #324. http://www.lancerregister.com/showth...295077&page=22

tl;dr :
The twin charged kit includes the following:
1 x GT54 Double ball bearing, anti surge turbo in a GT42 housings
1 X Eaton TVS (the latest and best design) root supercharger
1 X Custom made Intake manifold with built in Liquid to air intercooler and vacuum fittings
2 x Motec M800 files for unleaded and E100

 

That car had the blower in front of the engine and never really worked.

 

The photo I found, and Mr.Fred posted, is of the actual Norris Design prototype from 2011, owned than by Roni911.
That SC is on top of the area where intake manifold resides.
And I am quiet sure that Si kept the basic setup, optimized some details, including how to control electronically the SC bypass...
Yes, I am pretty sure the SC bypass valve is electronically controlled.

There are several Swiss hill climb Evos running twin charged, and winning for long time.
Donald, Madmac, is consistently winning with his Evo V in UK hill climbs.

Based on Si's reputation I am confident that his new production ready system is truly near-as-troublefree as aftermarket system is likely to be: its a simple system but the sequencing of bypass, diverter on shift, and setting up SC belt/pulley system is where the persistence and know how is crucial.