Stop in for a cup of coffee

Mopar Tim said
There is the gear on the cable, in a holder that is pushed in, and bolted with one bolt. Then the spedo cable is threaded onto that.

on the 66 and newer ones. But the hole in all 3 tailshafts is threaded, so wouldnt that mean the gear would be threaded? Or am I over thinking it?

below is the pic from Brewers. Brewer's Performance - Mopar A833 4-Speed Transmission and Component Specialists