[zzmac]

In the end I decided to go with a Holley 770. The one I had on the car!

I came close to buying a new carb but as luck would have it I ran into an old friend who used to work in a local performance parts shop and he recommended a shop called Specialty Carburetors here in Toronto.

I brought the carb into them and they diagnosed that the fuel bowls were adjusted incorrectly (no replacement parts were needed). I just took it for a test drive and NO hesitation. vroom vroom

Thanks everyone for your advice and for telling me not to buy the new carb!