Nice car.... and ditto about the "600 cfm"...
If you do decide to use a new carb, you may want to consider one with an electric choke.... they are easy to hook up and work great....
Also the local parts store should have "studs" to replace those bolts holding the carb down!

I would also recommend doing something about the spark plug wires...
A set of custom length wires and some wire looms would go a long way in improving the look and reliability of the ignition system...
As they are, (lots of extra length and no real order)... something will eventually burn or arc or crossfire or......