I upgraded my "radio" It kicks butt! At the time, no head units were available. A processor was installed behind the monitor. a 1000w amp for the replaced 6 x 9.. maybe 6 x 8 speakers in front doors. Upper tweeters in front. a 500w amp supplies the sub. Amps and sub are installed in the small area under the rear storage deck. There are now several head units available. I am considering the phoenix audio. .. 13 .1 inch monitor... Not in the states yet. doing a pre order.. I still need some questions answered. The sound quality of the factory radio not perfect, but pretty darn close..