Hey thanks for those suggestions!
I think I will go with this
As you cant readily get presolite parts in Australia and it is weeping a little oil into the distributor I imagine its about time for a new one anyway.
I will be running the MSD blaster 2 coil in it. Do I need to rewire the ballast resistor in, get a new ballast resistor, or can I leave it with the ballast resistor bypassed?