I'm not running one, but there are two types, blow thru and draw thru. The draw thru setup came on some mustangs from 79-81. It's not the ideal setup and performance is pretty limited.
If you want to blow thru, you can knife-edge an EFI lower manifold and I think Racer Walsh or Esslinger has an adapter for a standard 2-bbl for better performance. They also carry performance manifolds for carbs. I think a holley 350 cfm or maybe 500 cfm 2-bbl would work well, but I have no idea how to set one up for positive pressure.