Most people put Mustangs in the “pony car” catagory. A basic 6 cylinder or 289 Mustang would not be considered a muscle car. But I’m pretty sure that a Mustang with a 428 Cobra Jet would be a muscle car.
And for those of you that are offended that this Mustang has been chopped up: 472,121 Mustangs were built for the 1967 model year. There are still plenty more out there.
I’m a little bothered by this, but it looks fun, and it’s the owner’s car/bike to do with as they wish. I guess I would be more upset if it was a fastback. As far as the “muscle car” debate- it’s not worth debating. I think any 2 door, American v-8 from the early 60′s to 1973 could get a ticket to that show, pony car or not.