Carter AFB kits needed !

Ten 4
Thank you
Im going to try two of these on my set up.

View attachment 1715230035
I have one of those on the Back in a 1406 Edelbrock on the front. I was kind of thinking are the metering rods the same? And just numbered and lettered different? Is there a crossover chart? Or are they completely different links and that's probably why my carburetors or so crazy?