I had mentioned it in a previous thread, but I finally did it today. All you need in a 10mm deep drive socket, weatherstripping, and something to cut the weatherstripping. Over all there is a big diffrence, spoiler doesn't rattle at all, but some of the other body panels do. Sounds much better from the inside and out. Total cost was about $10, if you already have a 10mm deep drive socket it will only cost you about $5 for the weatherstripping.