No, I don't think there was any pre-forming for the headliners.
Here's an original one, a bit shrunk up and some cracks opening
up, like me, from age but still intact:
http://www.pbase.com/dennygraham/headlinervisor

The main problem that guys have is trying to install them
when the windlace is already or still in the door frame.
I'm sure the head liner was installed before the windlace
on the production line.
dg

Last edited by Denny Graham; 01/16/2015 3:12 PM.

Denny G
Sandwich, IL