Edelbrock makes some decent heads for the FE engines along with intakes as you already know. If you rebuild the original heads upgrade to hardened exhaust seats.
Pick a mildish cam like the Comp 268. The rockers are a rail type from the factory. You can get adjustable versions for not too much.
Look for a truck 360 electronic distributor. Getting rid of the points and using a MSD box will wake the old engine up too.
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General Stonewall Jackson has been quoted saying that when the time of war comes,
“My advice is to draw the sword and throw away the scabbard".