I'm trying to solve the same problem and will use the product listed below. I swapped out the passenger side fender on my F350 with a matched color fender from an F150. I've had a dozen people ask me how a Dually can be an F150. Time to swap the emblem and stop confusing the general public
the 3M two sided tape will stick. clean up the area with dawn soap and let it dry good, make sure you get all the old stuff off and it will be fine, i used it on my emblems 4 years ago with no issue