6X9 seems awfully small for an I/C unless it's the kind used on some of the supercharger apps, no? I saw one installed on a Vette - small, but it did provide some intercooling.
Does ATI have a site with pics? Is the piping complex?
Also, your comment about swapping noses isn't far beyond reality.... I know a guy that is proposing swapping the lower bumper area for one of the new Firebirds that has an opening there. Interesting concept, except most TTA owners really don't want to hack the car. But..... it would be killer with a front mount I/C.
I did see Uffe (the Swede) post a picture of a TTA with the newer style hood scoop. Not sure what a hood scoop does for you, but to each his own!