When I owned a 409 and a 411S1 I purchased a full set of front end components new from Bristol Cars since I read that it transforms the handling of the car.
However, I never got around to installing them, and as they were all in one bag did not bother to work out which fit which car. Subsequently I sold both cars and gave them no thought until reading your post... now that Bristol is no longer, I expect sourcing these would be more difficult
I would need to pull them out of storage and price them, but I would consider selling them. Postage from New Zealand.
Here are photos of the parts and the inventory sent to me by Brian Marelli.
List1034.jpg
FrontEnd_9100.jpg