I've copied the email I received from AAM regarding the 3. 42 gear set. Sounds like it gonna happen, just not soon.
Jay,
Currently there are only two ratio that fits into your Dodge 3:73 and the 4:10. The 3:42 is being developed. I am not sure if it will be in for the 2007 or 2008 model.
I hear many comments about the ratios that available and that many wants lower ratio for fuel savings.
Bob Dunn
Service & Aftermarket Engineer
American Axle & Manufacturing