4 barrel, duals and a distributor recurve first. Depending on how power hungry you are, that may be all you need. The next step: Depending how radical the cam you install, you will benefit/need a convertor and rear gears. Headers may be on that list as well. Now may be the time to up your compression with pistons or some closed chambered heads. Down the rat hole we go. (like with all builds when you are chasing power)