Rebuilding Bosch altornator (help with parts list)

I suspect my altornator bearings are going bad. I've replaced both tension pulleys, and getting a whining sound from that side of the engine. My charging voltage use to be 13.9+, and its been dropping over the past 3 months to around 13.6-13.8 now.

I'm looking at rebuilding it, and want to make sure I have all the correct parts first.

1999 328i

real oem ALTERNATOR BOSCH Typ no. 0 123 515 022 BMW no. 12 31 1 432 986 / 980

I found this DIY
http://ift.tt/2sYZsgD

Brushes - Bosch 1127014028
http://ift.tt/2sZdpvk

Small REAR Bearing 6203-2RS
http://ift.tt/2sZ0iKf

Larger FRONT bearing: 17x52x17mm
http://ift.tt/2sZ7iHg

What else do I need, what am I missing? I'm not set on ordering the specific parts linked, or from amazon, it was simply easy for referencing parts.

Rebuilding Bosch altornator (help with parts list)