I ran rubber lines - easy to get a my the local Napa also simple and durable like RD said. I ran my up the top of the left side frame rail as the OM617 has its fuel setup on the left side and the right side had some brake lines. The frame had a few holes where I used some nutserts (m5 IIRC) and used plastic hose clips with bolts to secure. I'm happy with the results. There should be some pics of it on the OM617 or my build thread.