An interior vehicle cargo system is provided with an interior cargo structure, bulkhead and a bulkhead attachment assembly. The bulkhead attachment assembly selectively retains the bulkhead in one of a plurality of locations within interior cargo area. The bulkhead attachment assembly includes at least a pair of elongated tracks and at least one fastening structure associated with each of the elongated tracks. One of the elongated tracks is attached to a first one of the vehicle panels, while another elongated track is attached to a second one of the vehicle panels that is opposite the first one of the vehicle panels. The fastening structures are slideably arranged on the elongated tracks to selectively fastening the bulkhead at one of the plurality of locations.