74 valiant exhaust

I just picked up a 74 valiant. One of the 0.04% that is a factory 318 car. Though it's a 4 door I want to make it enjoyable. I'm doing little by little upgrades/ repairs.
Does anyone know what headers will work best with the easiest install. Also what 4bbl intake will work best with a stock 318. I have a 500 cfm carb but not sure which will give me the best all around performance.
Any help is appreciated