I added the Kicker door and rear deck speakers to my R/T this morning. I am glad they did not sell on Ebay because I love the sound. I had a professional shop do the install. Very simple and cheap. When I bought my RER radio I then bought the speakers from the same SRT8 which was a new take out system. A very recomended swap for those who bought low option cars like mine. I love that my car has cloth seats, 20 inch wheels, RER Nav. radio and four SRT8 Kicker speakers.