Funny cars? Hydraulic cams?
It's very important to most folks today, to run well on "pump gas", 93 or lower octane. Using 108 in a street car is not practical. The Pontiac chamber is "unique", both a blessing and a curse. When octane is right, timing is right and the engine is "happy", the chamber provides good power and lower emmissions than most others of the era. That same efficiency makes them very prone to detonation when things aren't EXACTLY right (erred on the side of "danger", not "caution").