Rotor Arm for an S3

[Mr Plow]

I am trying to source a Rotor arm for an S3, for some reason every part number I try seems to give me a round rotor arm, where as the rotor are I have fitted and the Rotor arm on all other 2.9 V6 fords I have seen are the traditional looking style arm. Does any body have any idea of the correct part no?

Thanks

[Roy C]

It should be Motorcraft 1643692