[Dons427]

To; A-Snake
Your photo seems to show a windshield frame which is not wider at the bottom.
If the frame, when viewed form the side is the same width all the way down, then; that would explain why the blocks are the same length on this car.
Maybe; it is a image issue, and your windshield frame is tapered, just not visible in the pic.
Bottom line; my windshield frame is tapered, and is much wider at the bottom, and this is why the lower wing mounting blocks need to be longer to position the hinge points parallel to the inside edge of the frame so the lower part of the wing glass doesn't smack into the frame when you move them towards the driver or passenger.

Don