Mid 12's with a 318 head 360?

I watched the one video where he ported the intake port.

Good instruction by way of example for someone who’s never done it before.

I was pretty surprised how long he said it took him to do it though(1.5hrs for the one intake, 6hrs for 4 exhaust. That would be 24hrs total to complete both heads).
I guess you pick up some speed after you’ve done it for over 30 years.