OH MY GOD!!!! I bought the Alpine head unit too and just finished installing it all. I could not believe how good it sounds. I put the components in the front in factory locations, with the coaxial 2 ways in the rear deck. I ran everything through a Alpine five channel amp that I had with a 12 inch Alpine sub in the trunk. I do have to admit that it will probably take me a little while to figure out the headunit controls, but it kicks a$$!!!