Here's the chart for the Super Turbos. All of the single in/out Super Turbos will flow in either direction, but for an A-Body or B-Body you will enter next to the driveshaft on the offset, & come out for the tailpipe center.
Here's a pair of my chambered mufflers on a 68 B-Fish w/340: https://youtu.be/PdW5Vy1Dtv4 (I think it's one of our Moparts members' cars)
Interesting how they define sound profile by "street" or "sport". I'd assume the street nomenclature to mean somewhat quieter that a sport call out. Would have been nice to a certain engine combo test notation with resulting decibel levels at idle and cruise.
