Fairly simple process really:
1) Spray engine bay liberally with a de-greaser (warm motor up first, spray, soak, then spray off) car washes are smart to this and usually ban this but ymmv
2) Pull valve covers, intake, carb, air cleaner (sand areas which need them, spray with a good coat of paint twice, put back on)
3) Replace cap, rotor, wires, air filter, etc
4) Enjoy new look and then wish you painted the engine compartment - drink beer and say you'll do it next time.
See? Pretty dang easy!
B