Highly unlikely you will be able to source any new panels from Ford anymore sadly, there is a company over in Germany iirc called Motor Mobil they do a few repair panels for older Fords, there is a company over here who specialise in Sierras up Manchester way, they are on eBay user name “sierras r us” they cut a lot of decent usable panels from cars they break so they may be able to assist you, another company “expressed steel panels” also on eBay fabricate panels for classic cars another lead worth looking into. Good luck with your search