This is one of those urban myth's.
The Speedo right angle drive unit can easily be removed by undoing the large nut that surrounds it. The nut you must not undo is the one below the angle drive unit.
Inside the drive unit is much the same as the cable end, with a pin drive. If I recall correctly the nut is a litle finicky as it threads on the angle drive unit as well as the casing, hence you have to start it with the right amount of thread showing or it tightens on the ZF casing before clamping the angle drive.
Good luck
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