Tail of two darts

I have a 63 dart 170 convertible with the manual transmission looking at putting a floor shifter in not sure three or four speed yet but wondering what if any of my original parts can I use? I know the tree speed does not have the mounting location for the shifter and is a non-synchro first gear tranny anyway so not interested in that one. I have another car that I’ll be harvesting parts from. I’m assuming that the 170 and 225 bolt up to the Bill housing the same way? Thanks