I just installed a Stellen cover on my ’98 Durango. I know that your front end is different (one piece plastic cover vs. my 2 piece cover), but the idea is the same. I used the double sided tape on the top of the bumper and then I drilled and screwed on the sides (facing the tires).
I still haven’t gotten around to securing it in the bottom. In my case, since I am not using my lower bumper cover, I will need an extension piece.
Also, someone gave me this link when I had a similar question: