Close, but not quite.What you show in your photograph is a speedo cable drive, onto which a 90 degree adapter would normally thread. Two types were used VDO or Veglia Borletti, one has a flat drive the other a square drive, so if looking for a cable to match be sure to get the correct matching one.
In a GT40 application, one line is installed on the right side of the shifter mechanism case, above the shifter. It uses the threaded hole that is normally used for the oil filler plug in Pantera applications. The return line comes from a threaded hole which appears on the bottom of the shifter case, and was the drain plug for GT40s that weren't equipped with a cooler setup.To install an oil pump (cooler) you will need to have ports drilled into the ZF, there are apparently cast boss locations to do this, although I'm not sure of their specific locations.
Yes--the photos above show that there are three lines in the system, with two of them connected to the drive at the speedo gear.Mike,
Are you referring to the outlet drive to the speedo ?