My racecar runs 24 hole annulars built by Lightning Racing carbs. Since I footbrake with a large plenum intake (Indy 440-25) they were suggested. The 60 ft be much more consistant. I've been very happy with them. Mark is great to work with. It's actually had 2 different pairs of main bodies. NMCA wouldn't allow me to run thr billet bodies. Dumb rule. It runs exactly the same with either set. Car has a 285/292@.050 cam. Idles fine at 900. Obviously no street driving . It drives fine in the pits and doesn't load up.
https://www.facebook.com/lightningracingcarburetors/
Doug