318 MAX fuel economy builds?

Whew…. This could be a little tough considering the weight and awesome aerodynamics of a moving brick sitting high up vs a car.

If you’re like me, enjoy tinkering around with it!
On my sons ‘91 FI W150 4X4, I used a Edelbrock fuel pressure regulator with the electric in tank pump. Dumbed that pressure right down to a carb friendly level right quick.
Mine is 2x4 way down on the ground, what’s the # on that regulator?