1987 1500 12si bearing question, need advice.

[olllie]

Ok.. the front bearing on my Alternator is done. I think I have a 12si 94 amp (stamped 94) unit in my truck but I'm not sure which front bearing I need.

The only kit I can find.., it looks correct but includes a capacitor looking part that my alt. does not have. The Diode setup and other parts look right though.

http://www.summitracing.com/int/parts/pwm-912/overview/

Do you guys think its worth rebuilding a 12si (if that's what i have), or should I just spend $140 and buy one with more output? My 87 also has the odd V belt/ 5 rib serp setup. Will my ribbed alt. pulley bolt onto any shaft?

Are there any bolt in better alternators I could go with? cs144?

thanks for any advice on any part of this post