[Cornerlot]

Originally Posted by stownsen914

I think this *may* be a rotor to adapt a Jag cap for 911 twin plug use.

https://www.ebay.com/itm/PORSCHE-911-RS-RSR-CORRECT-DISTRIBUTOR-ROTOR-NEW-/310931967059?hash=item4864fd4c53:g:ZaEAAOSw5cNYFge X&vxp=mtr

Another contact who may be able to help is jpnovak here on the forum.

I think those are for the original Bosch 12 plug distributors, or at least ones not using the Jag caps.