shifter knob thread size

[footman]

Does anyone know what the tread size is of the shifter knob?  My fater-in-law is machining me a custom knob and needs to know the tread size.

[PaulW]

i actually think it's metric.  i put a universal b&m t-handle on my xj (same shifter) and had to tap it to a standard size.  try like a 12x1.75, nuts are cheap anyways  LOL