Yes, Definitely drill the holeI have that antenna on two of my vehicles with the mag. Thinking about drilling the hole on one of them. I have been looking at this one:
I think it is the correct mount, but it looks like it is missing something?
View attachment 58015
Same.I use the Sirio P5000 mag mount on the roof of my truck and works well. Better than the Wilson 1000 I had there.