Which cancel cam plunger do I need?

[Yukon Jack]

I am putting a van tilt column in my 69 K20 and will likely be using a Grant steering wheel with it.

The cancel cam on the van tilt is missing the plunger and I know there are at least two styles. One is just a metal plunger and the other is a plastic piece, that goes where the metal plunger would be, with a spring on the plastic end then a wire lead that goes out of the plastic piece.

Any idea which plunger I should be using?

Here's a couple pics of the van tilt's cancel cam.

Any suggestions on plunger style I should use or if I should be using a different style cancel cam? As you can see I don't know anything about them