Weatherboy

Ok i just installed myself a car computer and with it a 4 channel 1200 watt amp and well it sounds bad, I am far from knowing what a good setup would be, but my friend has a 99 passat with the 8 speaker package and am lookign to get to what his sounds like.

Again I dunno much about audio but was figuring heavy bass for rears heavy mid for front doors and some super tweeters on dash. Anywho mainly would it be fine to just splice off from the mids in the doors to the super tweeters as well what speakers do you guys recommend. Tring to stear from a sub so would like to get some good bass out of both the mids and decks.

Thanks,
Dustan