I just laughed a bit at this forum title. "The rounded line". Then second sentence calls them "square bodies ".
I've been working for 40 years & the term "square body" seems to be a fairly need thing to me, may be more of a regional thing.
If ever there was a "square body" it would be the GM200 '67 - '72 platform, not the GM 300 '73 to ' 87 (and thur '91 as R / V instead of C / K series).
