Drilled a hole.
 I bent the prong things back. Nice slit for the antenna to fit in.
 Fortunately, the spot that I drilled had a little compartment for the pot to chill in. It fits pretty snug when it's bolted in. I will most likely use hot glue for reinforcement.
 For now, I'm using the former antenna housing as a tunnel for the wiring. For the final, I'll probably take out the audio-in jack in the back and have the wires go through there instead.