Pretty sure the guy that posted up second in this thread can modify your carburetor for you..... ;)
I think that there is a guy in California that can do it as well.... ;)
Did you find out if your carburetor has a vacuum source above the throttle plate?
If you attach the vacuum advance of the distributor to manifold vacuum, it will remain advanced all the time, since it has a constant 16” or more of vacuum on the advance diaphragm.