just got an 84 t/a with all stock stereo components in tact. The rear speakers are the combo 5" and 4x6 and 4x6 up front (duh). I also have some weird button (on/off) on the dash with a music note next to it (what is this), but my main q is what speakers/amp should i use for those rears to get good bass/clear sound? Im using decent kenwood 4x6 upfront w/bass blockers.

 

That wierd button is the on/off switch for the 5.25" sub. GM had the sub amplified.

 

INFINITY COMPONETS!!!!!!!!!!