Best bolt ons for a small block

I'm hoping to check out a car after Thanksgiving. Supposedly it has a recent rebuilt 318, it has a 2 barrel carburetor and dual exhaust. If it's what I'm told it is it would be awesome, what would be easy bolt on modifications? I plan on keeping it simple for now.
How did this thread turn into a discussion about blowers and tunnel rams for the OP's mild 318 2 barrel he is looking at?