I think this regulator is for a two brush dynamo not the three brush type like the PA one but you may be able to use it if you modify the three brush dynamo. Maybe a more knowledgeable person on this list can advise you better.
Hi Manfred have a look under "Document downloads" on the website main page. Download the Lucas Technical Bulletins (you will Adobe reader) these describe the fitting of different regulators to our cars. Do you have the original regulator / fusebox. It is relatively easy to replace the cut-out with a semiconductor diode. I have details if you are interested. I can help you with the conversion of the dynamo if you need it. E-mail me at nfeakes@hotmail.com
Thank you Nick for the information but restoration has not yet reached the stage where help is actually needed. So I would like to make use of your friedly offer in due course. Best wishes from Germany Manfred