I know it’s not a y-block question but figured I would get the best help here. Trying to help a friend who is new to our era of Fords. He has a 57 T-bird with what appears to be a 56 3 speed overdrive and wants to use an electronic speedometer such as Dakota Digital or Autometer. The problem is the pulse generator adapters that are available are for 57 and later trans and are different for the 56 trans. Any advice on where to get an adapter to work or how to get the 57 and up adapters to work in the 56 transmission?

Duane