Goes under the lip. It's the ones JC Whitney had. I actually have two sets now. Lucked up on another set about 3 months ago.
The Comet hood scoop came from the Cougar Eliminator among other things, why not get the Eliminator wing too? LOL http://www.cougarpartscatalog.com/69spoiler.html Can't beat the price, I believe that it is also the same on one of the Dodge or Plymouths. This is a friend of mines business. Stand up guy with quality products.