I took the rockers off and found that the jack receiving pyramids were rusty - I feared for the worst, but after grinding them off, things looked not so bad.
I replaced them and took care of the seams with modern day kit. I will put some 'body schutz' on it and have it sprayed in the body color.
Next job: the area under the spare wheel. A little rusty. In the center, a hole the size of a nickel. I will enlarge the hole a little until it's perfectly round.
Then, the modification sets in... I'm going to fabricate some sort of self draining device, like you can find on a small sailing dinghy. The airflow under the car will create some sort of vacuum and it will suck out all the water. A proven system: I have it in my Saabs and TRs as well. (Granted, my classics don't see much rain...)
Some pics: