Cool! If you meant the FX-R projectors, I have a pair here that I've used for prototyping onto. They are great projectors but perhaps not the best for the Porsche/Bosch reflector. They are too big and way too heavy (heavy cast, not sure what metal it is).
Also with those, the chance that you'll have clearance to finish them up with a bezel or any sort is very slim. Not only they won't fit inside the oem reflector, you won't be able to adjust your height up to spec (inspection fail straight away).
If you are the DIY type guy I'd recommend you to start with a set of Morimoto mini. They are something like $120 for a pair. Add a set of 35w ballasts $100 (55w is way too hot) and a set of good old Made-in-China "plastic" bezels for $40. The kit should run you close to $300 shipped.
Problem are the plastic bezels that you've seen already I'm sure. They seems to be cracking after only a few hundred hours of "heat" treatment and the chrome coating starts to flake off a little with time. Not dramatic for some, or when looked at from far, but perhaps just not 'perfect' for a Porsche car mate. Unless you don't mind changing the bezels every 2-3 years... or who knows you could well be lucky.
Look around the forum, sure there are far better products available for your Porsche car. Extremely durable (anodized, good for the rest of your car's life), doesn't hide itself inside a hollow headlight, and they are advertised at about the same price ($355 shipped).
They are almost plug & play, maybe not as fun as making your own tho