Yeah, it depends on how you want it set up. The tough way (but nicer) is to fab up a custom plate to adapt the blower to your lower intake. Most people remote mount it .... because it's easier to get pulley's to line up that way. And you can mount it in ANY orientation (upside down, sideways, etc.). Just keep in mind that you may need to get to the oil reservoir plug in the future.
BTW, when I say most people, I'm not necessarily referring to Stang owners. I've seen this blower put in many different types of vehicles.