Cheap 318 performance mods.
I would sell that motor and and drop in a magnum 5.2 from the junkyard better cam better heads better compression and roller camshaft and put a cheap rpm air gap and summit headers 600 cfm carb.
Think of it this way everything you’re going to be doing has already been done to a stock 5.2 magnum. People love buying a motor they can hear run in the car!