The previous owner installed 944 turbo front calipers upside down on my car. I tried everything to get rid of the brake squeal. Stock pads, pads with Performance products vinyl backing and coating them with anti squeal grease. And no i did not put the grease on the disk facing side. I finally gave up and installed Boxster front brakes. After flipping the Boxster calipers I realized the 944 turbo brakes were upside down. The Boxster front brakes work awesome and match my rear Boxster brakes. I have never had brakes this quiet, but I am curious if the 944 brakes would of been fine if I swapped the bleed nipples and turned them upside down.