1988 1000 Le Mans - PHM Bell Top lever arm to carburetor slide connection - Rod verses Cable

Has anyone out there replaced their 11779 Internal rods with 9478 Internal cables The rods are no longer available and it’s suggested that the cables are an alternative/replacement. Was this an upgrade I wonder?
Eurocarb say they ‘should work’ but by their own admission aren’t that familiar. I’m wondering if the cables should be installed in conjunction with the 11777 Internal slide bars as with the rods.
Any help would be appreciated.