The 58 Chevy was an excellent design study. The Checkers look nothing like it.
GM had some very sleek body designs in 1958, some of the 2 door Buicks, and the
"4 door hardtops" (like the one in the video below)of the era.
Wonderful family sedans of the day with that "sporty look" of the day.
https://www.youtube.com/watch?v=9TpSWXG4P44
btw, here's a '58 Chevy... Doesn't look much like a Checker. ;)
http://cimg.carsforsale.com/607987/213300A9-2C97-4902-9282-B6D6C8F22645_1.jpg