They look cool as hell and could be functional for fine-tuning flow to each cylinder but only for open-engine cars. Once you button it all under a hood it works against you.
Ram-air, superchargers, and fuel injection changed the layout. Turbochargers for one thing don't look too cool when exposed, what with all the tubing and heat shielding.
Thanks for the explanation.
Hopefully one day I will have the means to buy an old-school hot rod or custom.