Hello Eric,
I hand built my shift **** for my 6 speed, and I'm not sure as to what thread pattern you are refering to.
There is a retaining nut on the bottom of the OEM ****, but it does'nt thread onto the actual shifter shaft. You loosen that from the ****, and the **** pulls up and off from the shaft. Be careful of the leather boot.
Hope this helps, smallfry

Here's a link to when I did mine....I hope https://www.crossfireforum.org/forum...hift-****.html

Well, I can't seem to get the link to work. If you go to the "Interior" page, and go to the #3 page in the history, about 1/2 way down you will see my post. Sorry, I'm not computer savvy....