Tilt Column Levers

I have a tilt column in my car and currently use Pontiac levers. I know the correct Cutlass levers are difficult to find and even more difficult to find in good condition. The lever for the non-tilt columns is available but has a spade end with a screw hole not a threaded end. The knurled end looks comparable. I'm not a machinist but wondered if it would be possible to modify the spade end and thread it? The diameter may be too small, and the length may not accommodate the turn signal and tilt levers. I thought someone on this site may have looked into this before or can comment on this being possible. Thanks Dave