Mopar 318/275 HP vs. Chevy 327/275 HP 'L-30'

I always thought it would be a cool idea to create a 318 "Commando".....everything a 273 Commando had, except with extra cubes (and maybe a '68 340 manual-trans cam). One huge question though: would those small port cylinder heads have held it back, in a competition with the 327? The tall port SB Mopar heads didn't come along until later on the 340, as we all know.

BTW, I always found it astounding that Chrysler never bothered in the slightest, to hop up the earlier LA 318's......I mean, geez, not even a 4-barrel?!