I've had a few people ask why our Roof doesn't match the 2 Door configuration of the factory Barracuda. The simple answer is that a 4 Door cannot share the same Roof characteristics as a 2 Door vehicle. The 2 Door Barracuda had a sloped-fastback design at the C Pillars. If that sloped characteristic was carried over to the 4 Door design, a person entering the back seat would be impeded as they tried to squeeze through the narrowed opening.
Below is a photo to show why the Door opening of a 4 Door is larger than a 2 Door. With the opening getting larger in a 4 Door, the front Door configuration also had to expand vertically in its opening. The front window opening could not stay the same while the rear opening gets larger/taller to accommodate head room for people entering the vehicle. Here are the comparisons between a Plymouth Roadrunner-Satellite 2 & 4 Door versus our 4 Door version of the Barracuda. I believe we actually did a better job than the Factory in attempting to maintain a "fastback" appearance on our 4 Door Project. We tapered the C Pillar to give it a "fastback" look. It's not near as squared & boxy as the 4 Door versions done by Plymouth.
Below is a photo to show why the Door opening of a 4 Door is larger than a 2 Door. With the opening getting larger in a 4 Door, the front Door configuration also had to expand vertically in its opening. The front window opening could not stay the same while the rear opening gets larger/taller to accommodate head room for people entering the vehicle. Here are the comparisons between a Plymouth Roadrunner-Satellite 2 & 4 Door versus our 4 Door version of the Barracuda. I believe we actually did a better job than the Factory in attempting to maintain a "fastback" appearance on our 4 Door Project. We tapered the C Pillar to give it a "fastback" look. It's not near as squared & boxy as the 4 Door versions done by Plymouth.