Need help identifying shifter- Hurst Compe Plus

The complexities and mixed origins of this car continue to unfold...

I have a shifter that I bought of a member here that looks like it's been heavily modified on the shift handle side. I know it was hooked up to the A833 that I bought with it, and I know it rows through all of the gears just fine. The problem I'm having is that I'd like to replace the shift handle but I can't see where any of the aftermarket handles with the two mounting holes would bolt up. Would I need to cut this handle off at the base, reweld a 2"-3" section of steel to act as a mounting plate, drill two holes, and then mount the new handle? Or is this a different variety of shifter altogether? Any advice would be appreciated.
Thanks all.