This weekend I tackled what no sane person would ever do. I removed the tar undercoat by the previous owner (the carpet in the cover shot is long gone) from the inside of my trunk! Used Lacquer Thinner and Adhesive Remover and a plastic putty knife with much luck. VERY pleased to report very little body work underneath. Good news for when we strip the car - now I can have the trunk shot too.
When I get more braver I will tackle the rust on the fenders - not much but a few spots
