I did this Saturday...
http://www.67-72chevytrucks.com/vboa...d.php?t=402836
and today I rebuilt the AM/FM tape deck that the post office tore up...took it apart, cleaned it, polished it, changed the bad shaft out, and reassembled it and tested it...now it's new and everything works, all lights, tape deck, radio, and it sounds pretty good actually...