It looks to me like the edelbrock design. Blower mounted upside down with a plenum on top with an intercooler core on each side. I think its a great design. Intake runners look shorter than the edelbrocks so it should be good for higher flow.

 

The two intercooler design is actually from the LS9 engine.

 

Sounds like they used a lot from the LS9. I think I read somewhere that the fuel rails are LS9 as well.