My opinion may vary from others, but I would go with the "over the fender." #1, the double banjo at the MC gave me some clearance difficulties. #2, I don't know what the performance advantage is supposed to be, but my setup with the two full length lines gave me a softer lever than the stock lines. I had two bikes side by side with the same brake pads to compare. There is the possibility that something else was off in the MC or calipers, but I feel it might be increased compressibilty due to higher volume of fluid. Anyhow, this is my opinion, don't care to argue, just saying if I buy SS lines in the furture, they will be "over the fender."