Search for my post a few years ago when I had my 65 Dart column apart. Many photos. Not column-shift. It was missing the rubber bottom cover, so I RTV'ed in acrylic discs to block air flow from the engine bay. Another guy installed a bearing there (many photos). My 64 Dart column is currently out. Of course, it doesn't have column shift (push-buttons in 64). It does have a rubber cover on the bottom, but don't know if original.