What I'm thinking of is this;
First, stripping it for a rebuild
Next, adding the Moyer stuff - electronic ignition, oil filtration etc.
Next, shaving the cylinder head and block to raise the compression to, say, a whopping 8.5 to 1.
Then, having the mains line honed.
Then, cleaning up the intake and exhaust ports with a carbide burr and die grinder (port & polish). Since it's a flathead, I expect relieving the area between the valves & combustion chamber may be necessary. Also, matching the intake & exhaust openings with their respective manifolds. Also as part of this process, checking and matching the volume of the combustion chambers.
Next, having the rotating assembly carefully balanced.
In other words, basic balancing and blueprinting.
Next, painting the inside of the engine - all non machined surfaces, with Dolphinite to promote rapid oil return to the pan.
Last, possibly having the cam reground to increase its lift & duration a little. A good cam grinder will know how to shape the lobes to maximize low RPM torque