Rick did some brazing this evening. You know it's serious work when we're drinking beer again.
The airbox is more of a manifold. There is one inlet that an air filter will be clamped to and 4 outlets that go to the individual carbs. Here's the progress so far:
The inlet still needs to be brazed in and then the two parts brazed together. And yes, those tabs on the side will either be folded up or cut off.
No pictures, but the little bender did a lot better on 22ga than 16ga.
Unfortunately it's still a bit wonky from yesterday's abuse.