67 twin turbo dart

The sensor I was looking at said it can run from 8-20volts, it a parts number 554-124. I can try the pull down, worse case is I return the Holley sensor back.
It’s worth a shot. From what I’ve learned, that sensor has a small strip of the face (as opposed to the entire face) that is actually the sensor. Given your thin reluctor wheel and the little strip of sensor it’s easy to see how it could lose signal. I have a 36-1 wheel just like yours and I opted to not use it and went to the wide face AR Engineering wheel.