I collected replacement body panels on an almost daily basis and got to work stripping the paint. I bought 5 litres of solvistrip from stripperspaintremovers.com (no affiliation), it’s potent stuff so wear all your safety stuff if you try it. I have used it on many different panels and believe it to be a bit hit and miss, completely removing some layers and appearing to have no effect on others, may be due to the paint type :s