which Carburetor kit?

Hello, I recently acquired a 4 barrel Holley. I want to rebuild it before I install it on the rebuilt 318. The number on the air horn is List- 8007. I think this is the smaller of the four barrel Holleys. Anyway, how do you know what kit to buy? There are renew kits, rebuild kits, trick kits, and super kits. I have seen all these on Ebay. I tried looking at the parts stores online, but they require a specific vehicle.And the guys here at my local parts stores don't really have a clue. Can someone get me started in the right direction? Thanks.