"You can tell him to just buy the pinbox to fit his new one instead of the whole thing. You both could work out the deal between yourselves. Thanks, we thought about that but the 08 is an early design and won't mix/match any of the new 5AB/SW products. He hoped to get the SW to fit the Bighorn and possibly reuse the 5AB pinbox but Reese said it doesn't work that way anymore. He hasn't got the oem box so I need to buy the whole thing with the 5er. I will figure it out once I have it home. Either sell the whole thing and buy just what I need or adapt the 5AB box to the 5er (I don't think it would be hard to do) and save the SW for the day I sell the 5er in case that buyer has a SB truck. Craig