Re: torsional rigidity of the crossfire
Maxwell, it would require major disassembly of the car to get photos of the spot welds.
My clue on this was that the car changes shape as the temperature changes. Above 50ºF the driver's door would close normally, below that temperature the driver's window would hang up on the drip rail and at 10ºF the window would overlap the drip rail by about 3/16". On the fifth trip to the dealer for this problem they installed the factory fix and the window doesn't overlap the drip rail any more but you can still tell the temperature by the gap between the window and the drip rail.
Since my problems with the door rattling loose in the frame and popping part way open (with resulting road noise) do not seem to be common to Crossfires I suspect that it is a unique structural failure.
Bobs, if it is a bonded structural failure it would be ironic since I worked for Grumman American which was the first light aircraft manufacturer to offer glued together aluminum aircraft to the general public. Though bond failure would explain some of the problems I've had with the car.
BTW I've been in the engineering business for over thirty years and owned and maintained my own race cars so I like to think I know a little about structures.