VOLKSWAGEN MK V GTI SPEAKER ADAPTERS (PAIR) - SRQ Customs
Scosche SAVW-6 Speaker Mounting Brackets Install 5-1/4" or 6-1/2" speakers in select select 1998-up Volkswagen and 2005-09 Land Rover vehicles at Crutchfield
VW MK4 How to Replace Speakers With Aftermarket | TDIClub Forums