Running a floor shifted 904 in an A body with a 4 speed hump

I am completely stripping the interior out of the 68 Barracuda for some restoration work.
Currently the car is a floor shifted 904 car. I plan to make it a 4 speed car eventually, but not yet.
While I have the interior out, I would like to go ahead and install a 4 speed hump, but for now I want to run the race built 904 that I have for bracket racing consistency.
What kind of auto shifter locating issues will I be getting into with this plan, or is it workable?