We patterned these and formed patches that will fit ALL 6-cylinder cars. I find that the rust NEVER goes as far as the raised boss for the door latch, so I made the repair panels cover everything from the door latch down. This one has already been trimmed down about an inch, and is being fitted – with the help of the floor and inner sill. We are able to determine the location of the sill based on the floors, it’s connection at the A-post which is solid (and it always is because it’s 16-gauge…), and careful measurements.