I remember reading this over on the H.A.M.B. You will also need to get a 12v to 6v converter for any accessories you don't change over to 12 volts. I tried to buy one from JC Whitney but they haven't delivered it yet, don't know if it is out of stock or what. They are available at other places though. I am using one to drive all the 6 volt lamps on the dash as I don't want to go to the trouble to change them, looks like I might have to or source one someplace else.
edit: drat! I forgot the link again......sorry
http://www.jalopyjournal.com/forum/s...tor+alternator