Early Hemi guys go nuts on them. I would grab it but waiting on a response from the guy with all the distributors if he has s early ones. He made me a offer on that lot he listed for 500 shipped. To bad I don't do hall effect ones. Need to figure it out how to do them. Speaking of which I actually finally went through my early stuff Man I have to get on them, have around 50 of them the earliest a 31.