How were they finished when they came away from the factory. On mine, it looks as though the rear underside was finished in a black primer then in front of the cross member and in the wheel arches it was finished in the bodywork colour. I seem to remember reading somewhere that the underside was treated with an underseal Schutz then painter over in the bodywork colour, but I can't find that now.
I'd like to get the car as original as possible if only to disguise my inexpert welding
