A Pillar Rust

wondering what thoughts are on how best to attack this? Threads I have read have me worried this could mean a lot more than meets the eye.

Saving a Miata. A-Pillar rust treatment. : r/Miata

Repairing Rusted A-Pillars the Right Way

pillar roof seam rust repair For A Bodies Only Mopar Forum

Windshield frame rust - Jeep Cherokee Forum

How bad is this A Pillar Rust? : r/WRX

1955-56 Chevy 2&4-Door Sedan & Station Wagon Right Windshield Pillar/Upper Hinge Area Repair Kit

Rust in A Pillar

Revealing the A pillar rust on my car caught it before I needed to do a chop and swap : r/Miata

More Rust

Rust Repair A Pillars (and elsewhere) - Ranger-Forums - The Ultimate Ford Ranger Resource

Rusted-out A-pillar rebuild

A-Pillar – Auto Resto

A pillar rust repair pics! - Third Generation F-Body Message Boards