Way back when I wanted a 13 speed **** on my getrag lever. If I remember right, I think used a threaded insert or threaded adapter. The getrag is metric IIRC and the EF Roadranger **** is bolt thread. I'm sure something could be welded up alot easier than trying to find the correct adapter.

I ended up going back to the stock **** because I felt like the longer shift lever put too much or added too much leverage on the shift mechanism, every now and then it would pop out of gear. Before and after it never did.

 

I drive a 8LL, 9 speed, 13 speed, and a super 10 every day. I am happy to have a regular **** on the 93 when I drive that.