I used a dremel to cut the smaller insert under the hitch, and it was pretty easy. I just lined everything up right for proper fit, and marked the piece, then took a dremel and cut it. I started conservatively and trimmed off a little more after the first cut and got it how I wanted it. Gene already had the aero kit modded for the trailer hitch when I I got it from him, but I would imagine if you have a little patience, a steady hand, and a Dremel you'd be able to easily make it work easily. I'll take some close up pics for you with the hitch cover removed so you can take a look.