I've decide that the roof extension should be pulled up, so that the leading edge is flush with the trailing edge of the roof, instead of slightly lower, as in the picture in
post #26. As vtec-e noticed, the "step down" at the joint had the advantage of leaving the center stop light visible. On the other hand, I am afraid that it may have caused airflow to detach. This would leave the center brake light useless, which I wasn't too happy with. The solution was to buy an attachable third stop light and mount it at the bottom of the rear window.
This makes me happy again
Now, the new stop light has something like 25-30 LED's and uses maybe 4-5W, while the OEM light had four 5W bulbs, giving 20W. Not that the difference would be noticeable, but why should it flash on when it can't be seen? So I put a connector socket on both stop lights and I can just switch between them if need be. The connectors are hidden under the hatch's plastic lining.
