Forgive me, I only had foxes as a kid. I was gifted 2 St G21's ball bearing and want to run one of them on suction. The Choke area is huge (3/8 ") and they don't draw fuel. The location of the spray bar makes is difficult to choke it down with an insert.
How did you do it back in the day? It The back plate is tapped for pressure, but I'd rather not go that route.