Cusser
+1y
Redline Weber is a distributor, so buy the kit from an online retailer, just make sure it's the genuine Redline Weber kit.
Search for Weber installation tips here, sand the adapter blocks absolutely flat is a huge tip.
I've run Redline Weber 32/36 DGEV since 2005 on my '88 B2200, like it.
As to passing emissions, depends on your state/area. I had to route vacuum hoses from one intake port to another because inspector didn't like the ports just capped off. Some were capped off from factory but only visible with the smaller Weber air cleaner.
Some have made a false top for the Weber air cleaner from the stock air cleaner so an inspector thinks it's the stock set up. That's sneaky, and a great idea.