Your goal is to try to build a 318 to what a 360 already is which is fine. But it's up to you how far you want to take it. Basics 4bbl exhaust tune, then there's cam gears stall OD heads beer barrel intake coatings low restriction rings roller cam and rockers etc.. Tons of little gains to spend $$$$ on. Just say when. You should come up with a combo from engine to wheels and ask for critiques these open ended questions don't really zero anything in.
It's up to you to figure out those compromises, obviously some are gonna say stay stock and others think you can go a fair bit with mods.
I understand that