I have to agree, there is not enough info out there on the parts that even used to be available, let alone everything that is available today.

Somewhere, somebody has used every rocker and every cylinder head combination and knows the ins and outs of it all, including the norris and dli stuff that is getting pretty rare
these days.... but those guys aren't talking or thinking about it anymore because they switched to T&D

I feel like I want some experience with OE style stuff first.

I deliberately didn't do quite a few obvious things to my 572 so I can step it up later, if desired...and that may not even happen....but my situation is, the entire car needs to be addressed first.