[Sci3ntist]

Hey guys, new member here.. I'm a Porsche/ sports car tech down here in SoCal and need some help identifying a few parts. I have an intake manifold and runners off of a 3.4L, parts are dated 2000, 2001. The manifolds are aluminum- something I have never seen on a few hundred 996s that I've had come throught the shop and the local dealers could not ID the part numbers for me!! I have heard of a super rare 3.4L X51 kit that was available in Europe but info is limited. I'm wondering if anyone on here can possibly clue me in on any other info on these parts, any help is greatly appreciated!