Mustang cowl and panel-gap inspection notes
Why the cowl decides so many early Mustang projects, and how to read panel gaps before paint hides the story.
The cowl vent area on these cars is a designed water path. When it rusts through, water lands in the footwells and the damage spreads quietly under carpets and insulation. Check the cowl from inside the car with a light, and if possible look into the vent opening itself.
After the cowl, check the usual structural suspects: shock towers, torque boxes, rear frame rails and trunk drop-offs. These are the areas that separate a repairable project from a reshell.
Panel gaps tell you about previous repair. Stand at each corner of the car and look along the body lines. Doors that sit proud at the rear edge, hoods that are tight at one corner and wide at the other, and trunk lids that stand above the quarters usually point to filler, collision repair or worn hinges — not to a simple adjustment.
Take photographs of every gap before disassembly. You will want them when the car goes back together.