I had bradied stainless lines on my 96' Impala SS which has ABS and i have put them on Mustangs, Camaraos and Corvettes and other vehicles all with ABS and had no problems. You also need to make sure the lines you buy are DOT approved. They make Stainless braided brake line that is NOT DOT approved which is fine for the track, but not allowed on the street. And if you do run the non approved stuff on your street vehicle and for whatever reason your brakes fail and you injure or kill someone, your insurance will not cover and you will be held liable. This happened to someone i know.
A company called Russel makes vehicle specific stainless brake line kits and may have a kit for the Ram, or may make one up. Try a Yahoo or Google search and get there phone number.