1. Nope. The rubber seats far enough onto the air box that I think the clamp is sufficient.
2. No, but I got the Amazon knockoff.
3. Again no. I'm trying to picture it, but not seeing a way where it would be helpful. The snorkel body is tough enough that the metal won't damage it.
Sounds like total BS, but instead of drilling the pillar, you can use magnets.
@mudbutt did it here:
What have you done to your 100 Series this week?. I followed what he did, even buying the same magnets (he posted the Amazon link as well). No movement on mine, I'm totally happy with it.