It would be interesting if you added a Camaro, Mustang or Charger design. I have tryed to make a muscle car with a normal sedan… Yuck. 
We have one, I think, but it might be a more modern body.
We’ve got that early 70’s 2-door one, it looks like a XA Falcon or a mustang to me.
Yeah I’ve used that body to replicate an XB Falcon before. It’s not so good for things like the Mustang Fastback, and it does have slightly limited morphing due to highly distinctive shape, but it’s definitely got the right idea.
More bodies will be coming, and what doesn’t get made will probably be compensated by the modding community.