What’s the google search term for this?

 Notice the front fender is pulled out from the body. I can’t ask google “pulled fenders” that brings up the other type of pulled fenders. And “detached bottom fender” gives everything on Fender guitars... is there a name for this? 

Also, what’s the purpose here? Is it tire clearance or brake ducting?

It would appear to be for air flow over the front brakes, but I don't know what to call it. Seems like door clearance could be a potential issue.

Vent air out of the rear of the fender reducing pressure?

Spaced fender, that's the term I've always heard

In reply to DWNSHFT :

That sounds cool. I’d love to see any results from testing on if it does alleviate pressure!

In reply to Trackmouse :

here is the speedhunters article on that mustang. http://www.speedhunters.com/2013/01/rollin-in-my-5-0-the-fox-redefined/