67' Fastback Rear Glass Channel Rust Repair

got6pak said
I recently bought a 67' Fastback and the only real bad rust on the car is the rear glass window channel on the passenger side lower corner where the glass sets. Has anyone repaired this area before? It doesn't seem like a quarter panel will have this material on it so I'm assuming you'd have to custom make metal patches to kind of rebuild it? Anyone have pictures of their repair?

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Going through something similar on the A pillars on my 72 Dart. Making patches and spot welding them in. Slow process making patches because I don't have a shrinker/stretcher. Its with hammer and dolly. Coming along okay for my first attempt at this type of repair.