I have a mach1 chin spoiler for sale. it is used and has some areas on the bottom of it that are scratched so I will let it go for $60 which includes shipping. I have a driveway that is not exactely level and when I first got the cobra I accidentally drug the spoiler on the driveway while backing it in the garage, now I use 2x6's as ramps so it doesn't drag anymore. Its not that bad, but its not perfect anymore either. That has not stopped me from winning any best of shows if that tells you anything. Here are some pics of it.
