The adapter can change a GM type speedo sender to a Ford type sender.
Directly screw in GM speedo sender and become a Ford sender.
0.104" driver key.
For Ford transmissions type.
For speedometers, see:
stores.ebay.com/Industrialstuffs/4675295017
For other senders, see:
stores.ebay.com/Industrialstuffs/4491719017