Thank you both. I figured something to do with disconnecting some of the wiring behind the cluster before trying to get it out. There just wasn't a lot of room left back there to get your hands up behind the dash.
Maybe someone has experienced taking the speedometer housing out of a dash of a late 60's Dodge Dart. I am having trouble getting it out. So far I have taken out the seat (so I can lay on the floor and look under the dash), lowered the steering column, taken out all the screws from the front...