I have an 05' RT AWD. I've had the car for nine months. What i've learned with the awd is, find what you want rims,springs,exhaust,intake... and contact the company that makes it. There aren't too many of us out there with the AWD's, and advise is hard to come by...
If your looking at a new intake look into the AFE Magnumflow "stage 2"
Magzero
05' RT AWD