Ohhh kay, i want to replace my cd player i have the cd player and everything but i have a question, how can i wire it up to my factory amp and sub in the back i dont want to go without them... if u have aftermarket cd player with the rockford fosgate upgrade on ur spec v , do u have the amp and the sub hooked up? How did u do it? Where did u get it done if it was professional? and how much?