I wanted to switch radios in my 06 Legacy GT, I was searching and searching under google and I came across a link that led me to http://www.avojdm.com and I ordered the radio frame, I damaged that car now I have an 05 Legacy GT but I was able to keep the radio and a few other parts that I ordered for the car and the parts that I kept are all backwards compatible, a Cobb v3 access port, a Cobb Boost Control Module (BCM), the exhaust, and the intake, the intake tube needs to be trimmed down. I have a working aftermarket radio with ac and heater in my Legacy GT now.