There's not much to mention here; the wiper cowl on my 996 has seen better days and needs to be replaced. It's an old plastic part that's become brittle with age and cracked at a particularly fragile location.
I won't try to do some trick DIY repair with plastic welding or epoxy. The needed replacement parts are still available from Porsche and are relatively inexpensive. The pieces I've ordered include the cowl panel and the cowl caps. This will run me about $300, shipped. I honestly thought the cost would be a lot steeper than that.