Side rails? Do you mean the running boards? O'no. She is not allowed to step on the running boards. I want to lower the truck. There is to much of a gap between the tire and the fender lip. Can't imagine cutting on a 35k truck? One of the joys in life is to be able to make your car or truck different from all others. Besides,lowering the truck is cheaper than getting her longer legs. She would be out of commision too long!! Imagine the piles of dishes,laundry,2 feet of grass to be mowed etc. She would never get caught up on her chores.