Exactly. While the econo head lasted right up to about the very end AFAIR, the rocker geometry issues as far as I can tell for any head is up and out depending on the rocker dimensions. I speak with B3 here when my rocker issue isn’t easy or reasonably brought into where it needs to be. The last geometry kit I got he said you might very well have to grind on the rocker shaft. I actually LOL and said, “What else is new?” And we laughed. With luck, I did not need to do it but the engine hasn’t run yet.
Also, your dead nuts on about no internet. The amount of people I spoke with on how to left me more confused on certain thing I just gave up and started getting parts just to try them and see how they reacted. Judge for myself the pros and cons & etc….
Right around that time in the early years, my club had a PR guy that got us a great deal, 10% over cost on any MoPar Performance part. So I ran down and started in with a lot of purchasing. Cams were big on my list.