the first link is for Chevys , I am not sure where the mounting points are on the Pontiac Alt. If they are at 12 and 6 O-clock then the Alt he lists for the long style water pump is the Alt you want. The wiring will be the same for the Pontiac. I have done this on my 69 Firebird, and my son's 68 Nova, they work great
this is the Alt from OReilly Auto parts, R111761A

http://www.chevelles.com/techref/ftecref14.html

Read through the different tech wright ups, very good info. I did the remote voltage sensing on my Firebird works good also, will be doing the brighter headlight relays in the near future

http://www.madelectrical.com/electrical-tech.shtml


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