Tim,
I'm about ready to go to the two carter/webers on an offenhauser manifold. I have a small cam ( howard m4f) from Patricks and the engine runs great now with the single holey/weber on it. but it feels like it need a little more.I had put a monojet carb from a 250 and it really seemed to have more power through the mid range. So I guess the small primary on the h/w is less than the stock monojet.
I bought the h/w from Tom Langdon about a year ago and it has been flawless, I also did the petronics ignition at the same time.


Tommy
59 apache 1/2t
261 short stepside