tell you what i did, i took the original speaker and cut the cone off of the magnet area that fits into the bracket. Then i took a small piece of sheet metal and welded a flat piece on the original speaker. Then i got two 3 1/2 in. speakers and sit them on there with just the magnets to hold them on the metal I've done two that way without problem. No pics sorry i about to (when i get some speakers) one for my wife's 67.