What all do i need for the super6 conversion?

Sounds like you are going to get a deal here.

You'll want

Intake
Exhaust (not necessary but nice to have if its not cracked. It'll match up with the 2bbl intake better than taking your old one and surfacing them to match)
Carb
Air Cleaner
Kickdown linkage (you'll have to get under the car and disconnect from transmission)
All brackets attached to the manifolds

Take a can of PB Blaster with you in case the manifold nuts are tough to get off. Might as well take the nuts and triangle washers holding the manifolds to the head as well. Even if you already have a set, there are guys always looking for them.

That should be all you need.