heumi12345 -
Oh yeah, I've seen that article before :
Green Car Congress: Novel Spoiler Design Reduces Fuel Consumption for Minivans, SUVs
I agree with animated_zombie, how did you make/modify/buy it? In terms of mounting, it *appears* that you have an attachment at the lower end/side :
I think you should post this thread on the "comments" section of the Green Car Congress article.
CarloSW2