Mate if XFT could not get it off without damaging the fuel lines, I think it is pretty safe to say that other places will not be able to get them off either without braking something int he process. Your best bet would be to get some new fuel lines from Ford (take heaps of lube) or see if you can get some from a wrecker. I would also suggest that you replace the in-tank filter or event better replace the pump and filter at the same time as doing the external filter, especially if your BA has done done a few kms.