I decided to install the trunk insulation mat today. Everything went well until... I went to reinstall the extra plastic trim piece that some model 3's are missing. These mats don't have the cutouts for it, or even marks where you could cut-out the sections yourself. So I'm left with a choice of removing a good section of it to clear the mounts, or fabricate a template and cut-out areas for them to go through. BTW, I added extra 3M Auto Trim tape in a few places to help it stick.