Not sure exactly what you are trying to do or your thinking behind it to be honest.
OK. I will try to answer.
Reverse pattern is not going to work with the stock shifter. Not only will the gear labeling be all wrong but the shifter will not work backwards. Which is no good if Park is where 1st gear used to be and the other way around. You will need to fit a shifter designed for reverse pattern.
The reverse pattern facility is part of a manual valve body modification.
It MAY be possible to have a forward pattern manual valve body but I am not sure? You would have to look that up.
Does that answer your questions?
I am not sure if it is the reverse pattern you are after or the manual valve body.