Check out the CATCUFF. It's a quality, American made product that locks up a catalytic converter to the frame of the vehicle so that it simply cannot be removed. It's a one-size fits all product that is easy to install with household tools. The CATCUFF is tougher than nails and is only one-eighth the cost of other catalytic converter anti-theft products, but with even more metal-thief thwarting deterrence and no annoying rattling or vibration. You can learn more at
http://www.catcuff.com