a little bench seat help?
I have a 64 Dart more door parts car with a bench seat. The distance from the edge of the front sttuds is 49 1/2" (same as on center), and the distance from the front to the back studs is 10 3/4". For the front to back distance, I also measured the distance between the holes in the floor pans to the seat support brackets (as the rear studs on the seat are bent) to confirm the 10 3/4" distance.
So that is the early A measurement for you.
Maybe someone else can get you the 67 and up measurememts.
I have a 64 Dart more door parts car with a bench seat. The distance from the edge of the front sttuds is 49 1/2" (same as on center), and the distance from the front to the back studs is 10 3/4". For the front to back distance, I also measured the distance between the holes in the floor pans to the seat support brackets (as the rear studs on the seat are bent) to confirm the 10 3/4" distance.
So that is the early A measurement for you.
Maybe someone else can get you the 67 and up measurememts.