visit your friendly neighborhood rebuilder... they will be able to tell you what you really need- no need to waste money for amps that you don't need- and rebuild your stock alternator with all the stuff to get the job done- all for much less than ordering one from somewhere.
if you want it to shine, pull it apart and polish it... not that hard to do with a few basic tools... then take it to the shop and have it put back together with the good parts..