Comparing 16 PSI Radiator Cap to Carbonated Soda Can Pressures

I too use the 7 pounder, and run a minimum coolant temp of 205*.
And my thermostatic clutch fan keeps it hovering just a tic higher.
Really I could probably run at atmospheric.with periodic top-ups to replace some coolant lost to steaming.
The bonus of low-pressure is ;
I think my top hose is circa 1973; the rest are 1999. The rad is a 1973 as well.
If your cooling system is doing it's job, I see no need for mega pressure.
For my system, running a 16psi cap on a 46 year old rad is just asking for trouble, creating the conditions for a catastrophic failure.
Some literature suggests that there are pockets in your factory ironheads that collect air and at atmospheric pressure, that air would never come out. Ok fair enough, I got rid of those factory iron air-collectors, and got me some Eddies. I think those aluminum heads suck so much heat out of the engine, it just might be impossible to overheat it. lol..... I even put several coats of paint on them to try and keep the heat from escaping. Heat is power. The hotter the engine is engineered to run, likely, the more power it will make. Right up until the oil boils off or cokes.