Refinishing the deck lid - one original piece saved!

Fun week this week; I took the G to the drag strip for the first time, and for me the first time in probably ten years.  I managed to run a respectable 13.98, which counts as thirteens to me.  Pretty typical for a stock G I understand, and probably not bad for 20" rims with tires at stock pressure.  There was one LS2 powered GTO (~2005?) running low twelves.  I couldn't tell if it was stock or not, but that would be great if the Chevelle can run anywhere near twelves. Anyway, on to what most of you are hear to read about.

Everyone asks me if there are any original panels that will be left on the car.  Well, the answer is at least one.  The deck lid I believe to be original to the car, and until now still had factory paint on the underside.  I thought it was in perfect shape, but like everything else on the Chevelle, there are surprises waiting at every turn. From a distance it looks fine, but up close there were still a few pinholes of rust from where moisture gathered.  The first picture gives you an idea of the overall underside.

 Up close, you can see pitting from rust,

 and a few small holes along the bottom seam.

 From the outside, it looks fine, so that is one plus.  There are five different moldings that cover over the back panel.

 The sail panel between the roof and trunk looks to be in good shape.  These often rust out, but look okay.  I think all the moisture settled to low points, because that is where we are finding rust.

 And finally, the last three pictures are the deck lid back in primer sealer.  One original part ready to go back on the car.  I don't think anything else will be this easy.  I can see why people build rat rods.