Console mounting.
The front screw on the rear bracket is offset toward the passenger's side and hole inside the console is offset accordingly. Thats how it was on my '69. This really tripped me up when I went to weld rear bracket to the new floor pan. Why would they make that front screw offset like that I have no idea makes no sense.
I believe the screw in the rear of the rear bracket is centered in the car.
The console is centered side to side in the car and the transmission hump is offset a couple of inches to the passengers side. So the console sort of "hangs over" the trans hump on the drivers side.
When the console sits evenly between the two front seats then you know you have it correct. I bolted my seats in with console brackets mocked up before I welded the brackets to the floor. This way I know it will have a correct look once seats get their final install.