Looks like I may have to go to plan B. The Poly locs are on national back order. No one has any and the supplier has not given any kind of lead time on these things.
That NOS mount cost me $75. If you can find one cheaper more power to ya! It was hard to take those pics for matthon, so you can see it is pretty much hidden if that matters to you. Your old mount will survive long enough. Just make sure you drill up from the bottom in parallel with the k side studs, you want the bolt to be in straight pull and no shear. Good luck with what ever your plan B is.