Arne, I think your right that you can overkill.That's where I am at and after reading endless posts from all different z sites, stock z stuff is pretty tuff. Reground cams have as many pro's and cons as new. The original metallargy is hard to beat and refaced rockers seem to be fine. I would ASSume ,like you,that MSA knows a little about these heads. My machinist, who has very little knowledge of these cars has had my head for a year-granted I told him it was alright to put me on the back burner-he is taking his time because every engine has it pecularalities. I also decided to go whole hog and it's costing me 1500$. That's all new internals ,valves , springs,cam,rockers,guides,lash pads and port and polish.I say someone who wants stock, MSA would be a good deal.