318 MAX fuel economy builds?

I don’t see ported J heads or any ported head needed for this mileage build.

What I do see as far as cylinder heads go is a stock head given a awesome valve job and that’s it.

Induction wise above the head is any mild dual plane intake.
Carb, small primary unit. The small AVS II 650 is fine. I’m with Bewy on a small primary TQ.

Camshaft - Isky Mile-a-more Hyd