...there is NO such thing as a 99.99% rust free Pantera....they had at LEAST 10% rust built in at the factory! The early cars had no drains in the rockers.....after a good rain you could hear the water sloshing in the body!
I cringe every time I hear someone say that a car is "rust free"....some years ago we did a resto on a 65 Mustang coupe that was sold new and had lived in Las Vegas for its' entire life...Vegas, dry, right? The car had perforations on the inner lower door panels (on the hard to fix textured steel area) because the car had all that fine desert dust in the doors and when it rained once a year, the dust got wet and stayed wet for some time, corroding the untreated steel.
Cars are not "rust free" they are "low rust"!
Rick