One of more cross members of a pickup bed structure include a hole in a flange in a location that is advantageous for installation of aftermarket accessories. The cushioning device has a cushioning member having a deformable bladder member defining a medium chamber and a flowable medium, such as a fluid, retained in the chamber. The base unit includes a wireline interface coupled to the subscriber loop interface. Each entry contains a credit value. After the pruned constellation is determined, it is then coded a single time, and this coded pruned constellation is used by the transmitter. Removing the connector permits withdrawal of the internal shaft while leaving the external shaft and sprocket assembly intact.