Nothing there, sorry. The rails sit directly over the pre-threaded holes on 1.5" square by 1/4" thick metal spacers which in turn rest on thin rubber pads of the same dimensions. I researched that as well, since I already have a Yakima tube rack. Thule and Yakima sell rail emulators you could modify to fit the transit for use with a removable rack. Rackit and REI sell them, among others. If you want a proper cargo rack, get the Prime Design Alurack. I've seen one of those in person. Gorgeous. I wanted to have my way with it right there in the warehouse. I was temped to get one but the allure of a purpose built ladder rack was too great, and having one now, I can't imagine living without it. I have other vans if I need to bring home something too huge to fit in the Transit.