W/r/t "Due a design error there is no way to connect the kick down/throttle linkage. I was told the only way to do away with that linkage is to go to a full manual valve boddy"
Let me translate: the person who told you this doesn't know how.

Drove a full manual on the street 50 years ago. Gets old 10 minutes into traffic. I actually wore out the detent steps in the shift gate. Can't drive the car at all if it rains in the next town, the car will loop at 10 mph on the 1-2 shift unless the wheels are straight.
A loose converter fixes a lot of this, but is that what you want?