If it's leaking from in front of the rear wheel, then you've likely got a rusted through steel fuel line and not necessarily a bad rubber hose. If that's the case, some of us have fixed that by cutting out the bad section and replacing it with a rubber fuel line and a couple of clamps. If you want to do it right, then the whole line needs to be replaced. In either case you will likely have to lower the trailing arm on that side to get access to the fuel line.

Len