The 5123 is externally regulated and a 3 wire system that is 80 amps but puts out 60 amps. Which should be perfect since I have an AC car with an additional amp. This is a direct swap for the 69. It also fits 3,233 different models/years of cars including 1,186 different Pontiac models.
I also called the Mr. Gasket Tech Rep and he pulled one off the shelf and physically looked at it. This same style works in many different years as well. I have another link to O'Reilly's website showing more specs. I also got the thing highly discounted from the Autozone's website with free shipping and 25% off with an additional $10 off. Also, by buying it from Autozone, all I have to do is walk it back in for a refund if I don't like it.
