Hey all - I'm not sure if I am saying this right, but I need the grey (or gray if you prefer) gear for the speedometer to work on my 84. I pulled the speedo cable off the tranny and it spins with a drill, so cable and gauge are working. Pulled the assembly off the tranny and this piece

is mangled on 4 teeth.
So, the local transmission shop doesn't have them, or do the local auto parts places. Where can I get them from? Is ebay just the easiest place?