Engine bay aesthetics

What is the cast lifter?...
The heads either have 1.88 intake valves or 2.02s... if they're 1.88 you can have a machine shop put in 202 valves...
That Carter 625 is a good carburetor and that performer will do just fine with the power level you have...and I should have cheap Summit headers and you should be good to go... Get a cam that matches your rear end gearing and your stall converter. Put Springs in your heads to match the cam....
ask a lot more questions about different stuff and make up more threads to learn more before you spend any money...