I have a super six that is in a 77 Volare. It has a 4 speed behind it and is an a/c car.
I also have a gas pedal and cable linkage setup that I removed from a 72 Demon that had a /6 in it but it was a 1 bbl, don't know if that matters but it is 100% complete, I also have the pedal assy from the Volare if it would work for you. I would say that you could make it work because I have an A body pedal assy in my Big Block 55 Chevy and it works great.
The carb is still on the car but has not ran since 1988, again 100% complete. I was going to list the intake on ebay but wasn't sure whether to list it complete with carb and air breather of just the intake alone. Contact me if you haven't found anything yet and we can deal on it. PM is best as I am notified by email that way.
I will send you a PM also.