Forgot to add that I'm not for throwing out your old linkage system. It can be made to function well with your FOM, it just takes patience and reading the manual and readjusting.
It does have a bunch of twists and turns to it.
It still should function with the FOM kickdown rod.
Steve, where's that drawing you did?
I successfully ran the old setup with my Eldy, before I converted over to an AOD trans, then had to ditch it.
Here's a photo of the previous setup.

A L A N F R A K E S ~ Tulsa, OK