I did all that. Dynamatted the frame, license, etc... and there still a rattle from the plate inside the license plate area. The reason we cut the hole sho big was to add a ABS plastic with the word "VEHIcross" lazered cut into it. I just need the find the ABS plastic that big and then a place that will lazer cut it out. I can work in autocad if anyone had a source for those things. I also have another uncut rear panel that I bought on ebay for $40 bucks. ;Dr;