I am not sure that finding NOS rods is a real fix no more than I think that the issue is confined to aftermarket fuel pump push rods. We have fought this problem since the '70s and I have always kept spare fuel pump push rods on the shelf beside my spare ballast resisters. In 2000, I had to change the push rod in my '71 GTX that had the original 80,000 mile unmolested 440. And a couple of years ago, I lent my last shelf rod to a guy at Street Machines for his original 383 Fury. I have probably replaced a couple dozen worn down push rods over the years. Most were OE.