Keith thanks very much for taking the time to measure that up for me.
I have also taken a net photo and am scaling it up from referenceable dimensions I do know ( ie the bolt centers on my TKO shifter stub.
Funny that my blow up photo almost lines up exactly with scale. I show 7/8" center to center,which is practically 22mm

Now thanks to your extra info I can try and verify what I am doing with a ruler on my pic.
As for thread pitch does 1/2" X 20 sound rightat your end??
If it is a lot of work then maybe that's why its 150 bucks....anyhow I want to try and tackle this little project and it could be quite satisfying.
Renaissance..thanks for the offer but I am using the 5spd..likely looking at the brushed aluminum style know with the cobra emblem on top.