OK, so EVERYONE doesn't like the idea that this women and her husband defaced their Bullitt with a spoiler (earlier posting), but what performance gains would there be (if any) from a spoiler. I'm not talking about the ugly thing that comes with the GT but maybe a Steeda race wing or something. Just curious. Only reply if you have factual information not more comments on what poor taste that would be. This is a technical question! Thanks.