Not sure I understand your lingo here...? Runs down what road? lol
Another very important piece of advice I learned from the machinist, split-pattern cams with bigger exhaust lobes are critical at our high altitude with the lower intake pressure. He didn't go into too many details so I'm thinkin out loud here, I figure it's because the pressure of the burnt exhaust gas is mostly the same as near sea level but the incoming unburnt fuel/air charge is at lower pressure so the exhaust valve needs to be held open more to help "pull in" the fresh intake charge.
BTW it looked like someone had previously taken the heads off, as you can see in the pics the head gaskets on there were replacement Fel-Pros, calipers showed them to be .040" thick. I've seen the thin .020" steel shim head gaskets on Summit, about how much would those increase my compression going from the Fel-Pros?