Weird Hemi Header set up

Also, the cars had to run full exhaust all the way back. What’s behind all that spaghetti is a small single pipe that runs over the rear to a cross mounted muffler behind the bumper. Reason for the cutouts, didn’t have to be connected, just there, and light

That's right. Much like the 68 Hemi Darts and Cudas. They had a similar exhaust with a single pipe.