To NOT need or benefit from vac advance, someone would need to be able to explain what they did to the engine to no longer require it, if we all agree that the OEM application of it is correct and useful.

Possible things people might say are modern shape combustion chambers, quench pistons, computerized engine controls....essentially trying to tell Hemi_Joel that the control he explained that is needed because of inefficiencies in the engine are combated in some new way.

I'm not saying that at all, just laying out the argument someone would need to make because what he said is still true with a big cam and more compression...