1971 360 question
If you are running a dual plane manifold, you could go with a bigger carb than a 750.
Like said previously, Halifax hops on this forum is the man. He will set you up by selling you a total ignition system or dial your existing one in.
Stay away from the later years Chrysler electronic ignition distributor made by Accel that was sold through direct connection. The earlier years distributors made by Chrysler are the ones to have.