Can they be fabricated and bolted directly to the head and avoid the water pump issues?
Think about which BB Mopar heads have the same bolt pattern on the front of both heads
My answer is none that I have seen or heard of going back the early 4 bolt valve cover heads with the bolt on rocker shaft holdowns
Elephant ears can cause leaks on the water pump gaskets if there not tied down really well, I've always used two bolt on the frame brackets on both sides after finding out the one bolt would cause leakage on the gaskets