So he doesn't know all the jargon, big deal
You if do think about getting it turned and bent, what about a new shifter totally. That way it could be bent, correct dimensions, and correct threading for the knob. It would take me two minutes on CAD to make. You could test and evaluate with another material to see what bend or angle would work best.
Might sound complex, but I am sure others would do it too. Plus it would have a very custom look.
If I get time I'll try to design one in cad. I use it everyday with my job designing communication transfer.
Don't have a functional computer anymore but I'm pretty mean on Autodesk inventor
Inventor has some issues, but for simple things it gets the job done.