Shifter base.....

That has ribs on the bottom of the handle to mate to a Hurst comp. plus bottom. I bought the whole set 1-1/2 years ago brand new and today I just replaced it with a new Pro-5.0.

Reason being? The base is cast and wears out prematurely! Any "BILLET" base will be your best bet. You can always rig it up somehow to work on anything.