I am in the process of redoing my system and sound deadening the entire car. I made a couple of neat tricks, but one or two have been shown before, so not sure if it qualifies. I was doing a photo set anyway, so maybe I'll just write something up and put it on my website. This is surprisingly well timed with a 2 week vacation, and the system was already scheduled to be worked on.
Yell if for some reason it doesn't qualify, and I won't spend extra time on it. Thanks for running a cool contest with a good prize.