Assuming that the cam is original to the motor, or was a correct replacement for that era 235, the distributor you want to use is the 1112403 distributor. Point gap is .016 with new points at anywhere from 28 to 35 dwell degrees. Use the 55-57 vacuum advance and time the motor to tdc to start and then advance it a little to see if it will stand a couple of degrees advance with today's fuel.
If you want the motor to run its best, send the distributor out for a freshening up. You would be surprised what a distributor operating as it should can make on starting and driveability.
