This installation kit is for mounting the Phat noise outside of the CD player location. (ie:to the back of the rear seat)
"If you want to mount your Phat noise in the stock CD player location, you will need to use the Jetta installation kit. This will require modification to the access panel, (cutting a hole in the door) as the Phat noise is too long to mount in the CD player location in the Golf or Passat."
"Touareg, 2004+ Passat Sedan, 1998-2005 Passat Wagon, 2000-2005 Jetta Wagon, 2001-2005 Golf/GTI, 1995?+ Use this installation kit with the PhatNoise? Digital Car Audio System."