Thanks Rusty, and I have a brand new one from Mike’s Carburetor.
Yes I know... mine is port-matched to my ported X heads, and I put hours into smoothing it out some, so it’s a keeper. The next time off I’ll modify it, until the it will run like this: View attachment 1715413671
I think the secondary throttle plates might hit with just the 1" adaptor. Might want to check that. IF you floor it and they wedge it will pin the throttle open.