3 speed tranny question

66 Dart slant 6 bought it with out a tranny so don't know what it had originally. I am parting a 70 duster with floor shift slant 6 I was hoping I could use the tranny and retain column shift. If not I will be looking for a top loader tranny.
Well,if you need a 66 top loader 3 spd transmission I have a few but I'm in NY.