Finally got me an E body

66340SEDAN said
The door & quarter glass windows are the same between 70-74 Challenger and Barracuda but rear window is different. I believe much of the structural & mechanical parts are also the same between the 2 but some trim and body panels are different.
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Getting close to the correct answer...

The windshield & front door glass interchange between Cuda & Challenger.. The rear quarter windows do not interchange, & the cuda quarter windows have a hard angled corner...The Challenger quarter windows are curved at the top...

Cuda

Screen Shot 2022-04-06 at 10.33.50 PM.png

Challenger

Screen Shot 2022-04-06 at 10.34.58 PM.png

And as previously shown the rear glass doesn't interchange...

Then there's the SE rear glass

And the Convertible quarter glass which does interchanger between Cuda & Challenger but not either Hardtop....