I think I have this all figured out now. I upgraded my Strange S60 with a new billet yoke and added a 8 magnet collar so I can measure the speed of the driveshaft. I couldn't find a mounting bracket anywhere so I just designed my own from stainless.

I ended up going with a MSD 2348 sensor since it was less expensive than the Holley sensor. I'm sure there are really cheap sensors available from DigiKey or some place like that but I stayed with the name brands.

This MSD sensor is kind of nice since it includes a light that tells you if the sensor is working. The light goes off when the sensor "sees" the magnet. I double checked with a voltmeter and the sensor is sending a signal each time a magnet passes under it. So I think this item is ready to go.

I'm going to make up some extra brackets and put them on the website. They only fit the Dana 60 with the Strange magnet collar.