I had to Heli Coil one of the oil pump cover threads. I also had a later style cover that uses small bolts for attachment. I really don't like those Phillips screws in that application. And they aren't available if you need new ones. So if you get the bolts you have to also get the newer cover or counter sink the holes for the bolt heads. I don't know if it's an absolute touch if you don't counter sink the holes but it's really close, too close.
I believe the White seal is the original seal. About time that got changed.