Does the rear bulkhead fold down separately from the seats? Is there anything Avalanche specific that is attached to the rear seats? I ask this because i am thinking of getting an 07 esky ext and plan on swapping to rear captain seats eventually (out of an 07+ suburban). I have a NBS sierra Denali now that i did the rear middle captains from a Yukon Denali and i really like the look. Would love to do this to this prospective next vehicle just as long as it seems like a possibility.