Hi, I got those boxes for free and they are from a water cooled 1200 gs so have the smaller box for exhaust on the right side, I then bought the docking frames for them. Then I fabbed up four counter sunk studs of stainless 20mm dia if I recall and four sleeves to fit over them. I also made four thick plastic washers to put on the stubs before sliding the sleeves over the studs. I then hung up the boxes mounted to the docking frames so they was placed where I wanted them to sit. I then welded 12mm stainless rod between the sleeves and the docking frames.