This is a great find. It's the "Special Mustang Pack", which is a nice set of Ford Mustangs from wacky folks at Phatboyz.

Released over a decade ago!

Note that the 65 Mustang was exclusive to this set, and was not sold as a single release.

If you collect Ford, Mustang, Muscle Cars or Phat boyz this is a great set for your collection (approx 1:100 scale)