Couple 46rh questions

If the Dart is floor shifted, I don’t thing the transmission has the built in bracket to mount the bracket that the vertical rod on the shifter uses. What you’re thinking if removing might be for a bracket for a column shifter.
It doesnt , but my build thread shows the way on the last few pages on how to mod the rod for clearance, and how to attach it at the bottom. I am very close to done with its mockup but have a little more to do fitting the stock shifter. A shim needs to be made at the top.