No, I did not say anywhere there was a connection between HEI and type of gas used. Not sure where you saw that. I was just telling Ron that switching to HEI will simplify things with regards to troubleshooting and setting up his bird.
My bird sucks only hightest as you know, with or without HEI.
'68 428 HO M3 Monster, 4-on-the-floor! Need I say more?