When restoring older vehicles I often run into a situation where the inside of the trunk lid is rusted with holes and missing areas. This is the lip that the trunk weather strip or gasket goes on. I am interested in how other techs have approached t his problem . These areas do not often have patch panels that can replace the damaged areas. Should I try to find a salvage vehicle with an undamaged area or try and fabricate the lip .If so any tips on how to do this or what I might use to fabricate the new lip from.