How heavy is the bumper? Could you fabricate a crash bar instead and save weight? Off topic, I procrastinated one time going to the junkyard, I wanted to grab some stuff for my DeeDee (Yaris), a week later and the car was gone. Ugh! and it's the same year and color as my car. Sigh... They don't hold on to the cars that long here in Maryland compare to when I was in California. Did you ever find a Scion xD with a full mid pipe?
