Alternator doesn’t make sense

[LuvNH]

Been working a voltage problem on a different thread. Short summary is that after other troubleshooting and work, my 911 is producing 16v+. I’m now focused on replacing the VR.

1979 SC with a ‘78 engine. Cleaned nearly all grounds, starter connections good and tight. Resistor installed (5w 91ohm). External VR removed.

Removed the alternator and I’m not sure what I have. The label says it’s a Bosch reman AL400X. The bearing cap on the alt says it’s is a Paris Rhone A14N95 105a. The VR has no meaningful numbers on it at all (on the inside there are some numbers that don’t come up in internet searches).

The Bosch AL400X comes up as 75a.

Called the Pelican peeps and they said that Porsche only made a 75a and a 90a. Same VR for both, btw, which I thought was strange.

After hours of internet searches, there is very little on the A14N95. Found some hits on a Peugeot.

Could the PO have placed a Peugeot alternator in the Bosch case? Could the cap be wrong? Not sure what I should do here.

Regardless, can I use a VR for a 90a one in this? Didn’t think so, but if the 75a and the 90a use the same. Pelican gave me this part number which appears the same. 911 603 913 02.

I know I could leave it with an alternator guy and have him do the once over, but I am trying to avoid that.

[Flat6pac]

Looks like the 6 bolts to attach the air extension are too short.
You need the correct depth fan housing.
The VR is the weak spot in the on board VR.
Bruce