Don; if that is a problem, I imagine that one could cut inserts out of the old insulators and make to fit in that hole to tighten it up, if that is of a concern.Lewis Matkin gave me the nbrs and said that they all superseded to the 69 ones. I have seen neither the old ones(new) or the new ones so I can't really tell you if there is any difference in the size of the hole. I do have enough insulators myself that are like new and if they sag at all then I guess that I will buy new ones.
one can buy or could a few years ago rubber of that density and thickness, so I don't really see why one couldn't make their own and laminated a steel plate onto them , you would just be missing that interlocking lip between the top and bottom insulator.
I thought that you were past that in your truck and that you made your own
ron
