The Mach headlights come from a Focus not a VW.
If you are refering to the sockets, any MarkV or Mark VI. You can also google search and find a how with VW part numbers.
2001 Focus ZX3 Race Car in Germany-Ours
2010 Renault Clio 1.2 16V in Germany-Hers
2004 SVTF EAP/ST170-Mine
2013 Focus ST2 TS NAV SUNROOF-Hers