Both ways are available.. The GM adapter for 7/8-18 works with the Mopar cable.. But it eats up space in a tight area..
[URL]https://americanpowertrain.com...-for-tremec-t-5-tko-t-56-and-magnum-6-speeds/[/URL]
And cables are available... Call Silver Sport, they have them, just not listed on their website... They are designed to use very little space...
[URL]https://www.shiftsst.com/speedometer-parts/c352[/URL]