The Kit is available at ALL dealers.
I just ordered mine today after taking off the Acoustic Panels Yesterday.
Its $67 for the kit and Since my dealer is 8 miles away I will bring in the 2 Panels and they will put the scoops on for probably 1/2 hour labor since they do not have to deal with the Spyder itself- Only the panels?

If you have Not taken off both under panels on your 2010-2012 RT you should do ASAP as they are easy to take off with 2-3 10mm small bolts.

With the Acoustic Panels Gone (Which Surround the Cylinder Heads) and the Bottom panels off And the Vents the air will flow in the vents then through the cylinder/Motor area and exit out the bottom and you should be a Happy Camper?