Being Dutch i can tell you the mentioned language is German
K-M-S.de is quality stuff, this guy has his 'own' Porsche Cooling Fans (custom casting)
Dbilas (known for their camshafts) makes intake manifolds for Typ1, WBX and Typ4:
http://www.dbilas-shop.com/Produkte/Ansaugbruecken/VW:::7_29_489.html?language=enhope this helps you!
(If you want to go crazy on a typ4, go straight shot with EFI, no bends from butterfly to inlet valve, its possible!)