<VV> 1960 Corvairs with horn grills

[shortle]

I noticed in Pete K. excellent article a different variety of grills (as shown in the pics). In the beige car, the grills appear very straight and uniform. In the black car, they appear of a different length and are not as nice in appearance. Can anyone shed lite on this matter or did anyone else even notice?
Timothy Shortle in Durango Colorado
(I'm not a '60 guy- the only year I have never owned)