hispanicpanic

I'm going to replace the radio in my car with a tablet PC running windows 8. My question to you guys is, which tablet would be the best in terms of audio quality? I'm still not sure how to wire this thing yet, but i plan on using the stock rockford fosgate system ( 4 speakers, 4 tweeters, sub + amp). I don't want to leave any audio quality on the table if at all possible. I'm also not sure how i'd setup the stock speakers as an audio input to the tablet.... Any suggestions??