The problem I have with that is the smallest Edelbrock is 500 cfm. That’s a bit optimistic for the slant I’m building. This is the Carter 400 of a 273 66’ Barracuda. I could run a Holley 390 but much prefer Carters. I was hoping there was an off the shelf adapter but if I have to get one made it won’t be a too big of a deal. I have a few buddies that are machinists in the refinery’s I work in.