Can-back gave Rick great customer service, but they told him they are considering not doing custom lengths for the runners any more because of the problems of lining up the factory bolt locations for the runner. Rick's runner is bobbed 9". He had to send back the main rails to can-back to have them re-work them to line up correctly with the factory top mounting holes due to the bob. Like I said before can-back treated him right, great customer service, but they did say they were having trouble with the custom runner bob sizes due to where people cut them... Not so much trouble with the trucks cause we just drill the mounting holes into the bed rails any way.