deciding on a intake for a sbm weiand stealth or air gap

Both are great intakes. I've seen both on header and exhaust manifold applications, but I think the A G is more performance oriented and it's added design element doesn't do much to benefit the user on a car with manifolds, even though it will work in most typical uses.

I definitely agree that the difference in performance isn't even measurable in most cases. The AG being cold blooded and the Weiand giving more fuel economy when they are pushed to the uses for their design benefactors.

If I was building something to bracket on the weekend competitively, I'd go for the Edelbrock and a set of wrapped headers to keep it cool and keep under hood temps down for better air charge and scavenging. If I wanted more fuel economy and practicality on a street car, I'd go exhaust manifolds to save my headaches around bumps and dips and for lower temps and keep the crossover for atomization. If fuel vapor lock or coking became an issue, I'd space the carb or run a TQ or Street Demon on the Weiand.

I still think the Weiand is a better street manifold for Michigan. If it were down south, I'd pick the other.