Yup, friction fit with the 2" rubber grommets. You could add a bit of silicone to firm them up. If mine fall out, I'll let you know. I also trimmed a bit off the rubber grommet "front lip" to get it to fit more recessed with less bunching-up. The trick is to also cut the new hole the right size so the grommet will bind just right. I can't remember what dia., but if you get the grommet- use some calipers to measure the hole size you need. Good Luck.Originally Posted by MSHardeman
Here's a helpful post if you haven't seen it yet:
http://www.vehicross.info/forums/sho...?threadid=9338
It's a fun mod!