Well, not really but it's not the manual valve.
High jacking governor oil is the reason. The rest of the shift kit is very similar to the other shift kits they have.
I have one in my rig. I do like how it will downshift on its own, I'm not sure if that's how they all are but it makes it nice for coming to a stop. Lockup is really the only thing you have to worry about. Other than that I have nothing to add