Don't know where you ordered it from, was it MotorSport Warehouse in Tucson, or did you find a real stainless steel one somewhere? Cuz the Tucson one comes with 3M stickum on the back.

You have to remove the "Isuzu" badge otherwise it will show. Just use a hairdryer and a plastic or other blunt pic (so you don't scratch the plastic) to start lifting it off as it heats up. Took about 15 - 20 minutes tops.