To change your wipers:
Get at Oreilly Store Bosch wipers 22inch they’ll mount great on your Boxster straight out of package.
Instructions: lift wipers and slide down the old ones and slide up the new one easy
To change light bulb:
Get H755 55W for the regular light beam
And you’ll need either the origin Porsche tool or go get your own from the shop. It hex female socket tool you need. A 5mm 6point socket will do the trick. With an extender and the wrench you’re all set.
Instructions: a bit more tricky