Car Stereo Speaker Mounts From Garden Drainage Housings. By saul in WorkshopCars5,995114Save PDFFavoriteIntroduction: Car Stereo Speaker Mounts From Garden Drainage Housings.By saulFollowMore by the author: Some home depot garden drainage housings proved to be awesome speaker mounts for my VW dune buggy. Step 1: Buy Appropriately Sized Speakers. (MINE WERE 6" ROUND)Step 2: Buy Appropriately Sized Garden Drains. (in My Case Both 6")Step 3: Mount