OK guys picky, picky, picky. You can also leave the 6V wiper motor in and install an in-line resistor to lower the voltage to it. Yes you can run a 6V starter on 12V but!!!! Right is right, and you can remove the flywheel, have the teeth machined off and have a correctly toothed (yes there available) ring gear pressed on.
THAT SAID, I wasn't writing a step by step manual on how to convert, I was only giving a general outline that this is not an easy conversion process. You can write a book on the proper way to convert a car as per original 1965 specification. I'm not going there. It was just to help the new guy realize that this is a time consuming, pricey, and generally unnecessary upgrade. That's all, no more no less. But thanks for everyones input.
:cool:

Also one other item I was incorrect on is that Porsche no longer calls their information document a Kardex it is now called a Certificate of Authenticity or COA.
I'm not too proud to say I got something wrong. I love it when others voice there experiences and expertise, thats what these forums are great for.

That didn't work for me. Mine moved so fast on 12 volts they threw the blades off!! I had the old "square" motor used in 356 As. The round motor might work differently. I built a converter using a zener diode that clipped the voltage at 6 v and worked OK. A few years later I put a '68 VW two speed, 12 volt motor in, mostly for the two speed feature.