AEM has introduced the solution to getting an extra sensor in your exhaust system WITHOUT needing a welder or welding skills. These are basically an exhaust clamp with a O2 bung already welded in place! All you do is drill your hole in the desired location, get the appropriate sized clamp-on bung and wrap it around the included gasket, then clamp it into place and screw in your O2 sensor. Done!
NOTE: This is for the clamp only - an O2 sensor is NOT included.