This brings up something I've been pondering for a while. My car came with a "modern" sheathed cable attached to the positive ground side of battery and running to the engine block, mounted at the coil bracket bolt. I knew this was not original, but it works. I know the concern with the ground cable was to provide a substantial ground for the starter, which this configuration accomplishes. I haven't changed it over, because it worked and there were more pressing issues up to this point. Is there anything I am losing by just leaving it this way....other than originality points. All electicals work fine.