I think the man in the Lefever photo appears taller than the car due to the angle that the photo was taken at. But it is hard to say.
There is this photo with the same car in it where he is standing a little more upright and appears taller compared to the car than he does in the other photo.
http://www.thetallestman.com/images/...ini%20(56).jpg
However, the cars are a very good match. Even that same vent in the fender can be seen in both photos. That is a very strong connection.