I'm pretty sure it wasn't Rose passion. The french forum fellow member I'm talking about bought them directly from a Porsche Center in France. Actually he's not too happy right now, with his car experiencing bad cold starts and running on 3 or 4 cylinders until it warms a bit. It runs fine when hot, but he suspects that the new injectors are responsible for this poor cold running.
If I ever need to replace my injectors, I would go for this set here
https://www.ebay.com/itm/372106959677. They are flow matched and are much cheaper, even with import taxes to Europe.