Speed sensor question

I had one of their units on a Cordoba, back in the "80's, and liked it. I have a used zt-3 that was in my 64 Valiant, when I got it (going to put it back in). This unit will go in my 66 Valiant "race car, which I am making streetable. Most people don't know, but Direct Connection had a version called a "performance timer". P4349443, I have one of those, also. Direct Connection performance timer-P4349443 | For A Bodies Only Mopar Forum
I’ve got 2 of those bad boys. I forgot about them.