Depressing Dyno results. Need advise

I wouldn't start throwing money at without going back to the basics. As GJ stated your probably floating the valves with those old springs. What about the valve train? Push rod length ok? Rocker arms or adjustment? Definately add an electric pump and a low restriction fuel filter but I wouldn't change fuel line diameter yet without testing fuel pressure and flow after you go electric pump. My 3 cents.