[phonconn]

I am sure Ford used different suppliers as they used lots of different suppliers in all the different areas of the Model A. From working in a Ford Garage in 1985 the F series pickups used over 20 different starter suppliers.
Often Ford would contract with a supplier and the supplier would do a bare bones bid to get the contract and then when Ford would reorder the supplier would come up to a price they could live with and Ford would drop them for another supplier with a better bid.