Well I am happy (and embarrassed) to report that this rather simple matter has been resolved and it took about 4 tries... on my 78 Bronco, the original cable rotted away so I tried 3 different aftermarket cables... of all, honestly after I cut the cable to the correct length the LMC one was built the sturdiest (made in Taiwan) and worked the best but I cut it incorrectly and ruined it as it stranded where it was cut. The other 2 chinese made ones worked at the beginning after cutting to length, but I would always hear the speedometer whirring and jumping would ensue from time to time. I greased them very generously with white lithium grease..... and that helped but the other day on my 200 mile I definitely noticed it not happy >60mph.
Well today I installed the old one off eBay that came off a 78 Bronco. The quality of build is superior and it has the sharp tipped end that goes into the speedo head. It is exactly the correct length, came with all the factory clips and "bumpers". It worked like a charm. In fact when I had the cable installed at the cluster and I hand spun the driven gear, I could tell how little-to-no resistance it had. While driving I DO NOT hear anything on the speedometer and I drove up to 80mph today with little to no movement just like BB 2WD, and no fussing while slowing down either.
I paid $35 for this old cable... but I could have saved so much time and hassle had I gone with this to begin with.
I hope the situation on the bullnoses is better on aftermarket.. I will safeguard the one off my low-miles parts truck!!!