<VV> Corvairs as A-bodies, engineering similarities?

[William D Conwill]

I recently discovered that GM considered the Corvair to be 
part of the same "A-body" series as the 1961-1963 Buick 
Special, Olds F-85 and Pontiac Tempest.  That sure suprised 
me!

Aside from some elements of the Tempest transaxle, did these 
cars share any other components or design features?  The 
front suspension, maybe?  Were the original A-bodies unibody 
like the 'Vair?  

Maybe this is the wrong place to be asking, but it's a 
start.  I've noticed that information about the other A-
bodies is curiously absent (at least for the '61 to '63 
cars) online.

-Dave