I am getting ready to address the Steel Fenders for my 37 Ford Coupe. These are very rusted both inside and out and have start to be eaten away by the rust. I want to stay with all steel and it does not appear anyone makes steel fenders for these cars. I intend to bead blast the fenders inside and out to get to clean metal. To give these a bit mor substance since they are very thin in some places, I was going to put a layer of fiberglass inside the fenders. Are there other options to make these solid?