find a company with a laser cutter, tell em what you want, draw a picture.. they'll usually cut em for like 30 bucks for all you need.. the person i uses cuts all 16 for 30 bucks.
u can get these for 5.95 a piece from www.foothilloffroad.com but they look cheap and there not notched to go around tubing...u get what u pay for man..good luck