Best bolt ons for a small block

4bbl intake. Aftermarket alum if you can afford it. Edel 650 AVS2 carb, it has annular boosters. Use the Holley as a doorstop...
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@Dan the man
Keep your eyes out in the for sale ad section and eBay, FB Market place etc… you’ll find an intake inexpensively. The Edelbrock Performer is an equal to the factory iron intake. I like the Carter carb vote. Jet it, set it, forget it. Your done. On low level HP builds, it’ll make the same power as the Holley. It has plenty of cfm @ 650.