Hydraulic release bearing question

I run that setup on my Coronet. Rather than trying to figure out how to make it work, I used the factory clutch rod and attachment pin location. I cut off the clutch side of the rod about halfway down and tapped the end for the threaded rod they give you in the kit. Adjust the length of the threaded rod accordingly and you should be good.

Mopar Performance used to sell an adjustable clutch rod that is already tapped and threaded. Perhaps you could hunt one of those down and start with that instead.