Hi, the car has developed a fuel leak due to rusted line. From what I can see under the car at the rear passenger side wheel arch are pipes of 2 diameters, plastic covered metal, 2 large, one smaller running in a tight space between the body and the tank. Should I replace with hose & clamps or cunifer and compression fittings. In either case what size of tube/pipe/fittings are required. Thanks for any assistance in advance.