x2 on considering the CS-130. I had no problems replacing the 10si.
At the time the CS-144 was all the rage, but it is larger so fitment isn't so easy.
Also think twice about dealing with AZ. Odds are good your new rebuilt alt won't work.
Too many stories about bad parts. New starter solenoid killed my battery.
Better to take a core to your local alt rebuilder. Never yet had a problem.
Seemed like a good idea at the time...
69 1414x Wagoneer 350/TH400 DD & Ski Ride
68 Chevelle wagon 350/BWT50
68 Impala wagon 327/400
73 Cougar droptop 351C/FMX Garage Queen
04 Impala LS - Wife's DD
73 Wagoneer parts donor