64-66 Barracuda rear lexan

Not to derail the conversation back to the glass but I was told by a older Chrysler engineer at a MoPar at Englishtown NJ show back in the early 90’s that the rear window is actually part of the rear flex support on the Barracuda. I happened to be one of like 3 early Barracuda there and he was a judge.
I asked him a lot of questions about the glass and he said the rear window was bent so when in place it supported the back half of the car for twist side to side and laterley. On a race car no big deal because of rail connectors but a street car... it would put a lot more force on the quarter panels just under the C- pillars I would think. Especially on corners. The glass is part of the support structure.
Anyone else know more about this?
Also- wicked cool 66” RT1976

Joe