wheel house panel replacement

i am in need of replacement wheel house panel for my '89. Unfortunately the panel has rusted through under the battery from sitting for quite a few years from previous owner with an old battery that leaked. I am looking for anyone that has been able to source an OEM or Reman panel to replace. I am trying to find a panel before going to find on in junk yards or make a piece to replace the bad section. Any help is appreciated.