The shoulder belt anchor point is in the green circle. Same type of shoulder bolt as the rear seat lap belts.
The threaded hole is there on all E-Bodies. Work off of the window "angle" in the roofline and feel for it. It will be above the interior trim.
The Barracuda/Cuda roofline has an angle as pictured below. The Challenger is more curved. 2nd photo is the driver's side shoulder belt anchor (threaded hole) for a blue Challenger (note the smoother roofline).
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Example showing the smoother bodied Cuda with
angled window opening versus the Challenger's
smoother window opening.
Counter-intuitive based on what you would think, right?
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