318 cylinder head

You have a 4 barrel. Add some nice dual exhaust and have @halifaxhops recurve the distributor for you. You might be surprised how good it runs. I would do a compression and cylinder leakage test first of all to see if you need to pull the heads or not.
It has duals on it. I pulled the heads when I got the car just to see. I know one of the exhaust valves is starting to recede. Stock heads are 60cc replacement Indy's I'm looking at are 62cc with 202 valves.