Originally Posted by
RubeRad
nvm, pictures online of my M786 show 2 knuckles OEM, I don't know if that's considered
an extender already as part of the original design

No, not an extender, that is just the normal mount, what is called the B-link.
That is removed and replaced with the GL when trying to extend the range, (if the model is compatible). See the Wolf Tooth instructions.