Here's a close up of the rusty holes around the rear screen aperture. Because it's hard to get body panels here in Britain I decided to cut it all out & weld in new steel.
The car originally had a vinyl roof, which when removed showed very badly pitted/corroded steel. I decided to lead load/body solder these sections to build the steel thickness back up to original.
Here's an update on how things are going. The roof had a lot of corrosion across the front, so it was cut out & new metal welded in. That was then leaded ready for primer