Depends on the differences over the Z06. So far it looks like carbon metallic metallic brakes + bigger calipers, and the centrifugal supercharger setup. I would also venture some more carbon fibre pieces, perhaps some gear changes.

It has a stronger floor board to prevent danger to manifold.

rumor has it, carbon fiber body pieces, lighter suspension and frame pieces. and much more.

And extra roof panel glue??

I''m totally lost with that coment. I'm not sure whether you're talking about the tops seperating on the 2006,which don't happen on the newer years. The C6 which is 2005 ,06, 07, ZO6, don't have removable tops.

what the heck was that square thing on the motor?

I'll assume it'* the top cover of the Supercharger???