ok i know you need a descent amp  preferably 2,000 + watts since the  fi btl can handle 2,000 rms.  But Like i said im new. how do i know if i need a new alternator or new battery and how do i find the right one.  I place my car make, model and year so someone with education and know how could easily tell me a nice setup BEST AMP?  BEST ALTERNATOR? BEST BATTERY? for 2002 taurus ses