The first owner ordered the 5er we have now with a 5th AB SW cuz he had a SB. It's the same length as an ext. pin box and there's no difference in how it tows or feels. I used it for a couple of trip and it's a PITA to hitch with that tight fitting wedge but I guess there is an aftermarket that is tapered a little. My take on it is... it defeats the ease of hitching a 5er but it works like it's supposed to. I would definitely do some grinding on mine if I kept it on. My 2008 setup is the early design and there's 3 pieces. The turret, the arm and the 5AB hitch. I have a LB so I took off the turret and arm and built adaptors so I could move the 5AB back 10 1/2", bolt it to the 5er frame plates and delete the wedge. Don't worry about the strength of the pivot. It's built with brute material. I took mine apart in pieces so I could handle them and I couldn't see any wear. The bushing in the turret looks like EHMW. I lightened my RV 120 lbs - the weight difference between the pieces I took out and the adaptors I built. Craig
