I don't know if the gasket helps, or not. I'll wait for others input.
If you have the room under the hood, I would play with a spacer. I have seen them make horsepower for almost no money.
I think the spacers that seem to work (ENTIRELY dependent on engine combo) is a four hole on a single plane intake, and an open spacer on a dual plane.
Tuning for the spacer may be required.
