If remember correctly the rusted curved piece goes in the bottom of the housing aligning the 2 holes with the center and rear hole in the housing (the front hole is for the speaker wire). Place a bolt through the center hole. Then take the short straight metal piece with the offset and 1 hole and align that hole with the rear hole and place a bolt through it (this piece gives the driver a place to set to support its weight). Take the black aluminum piece and place it on the outside bottom of the housing sliding the 2 bolts into its holes ( this piece is milled to accommodate the taper of the housing so be sure the narrower end goes towards the front). Install nuts to secure. Insert the driver so the threaded spacer goes through the hole on the back of the housing and use the acorn nut to secure. The rest should be straight forward.