I don't know if it would settle the matter, but since the NGen mufflers have supposedly been in all the 2019 Hyundai cars and we're now seeing the 2020 models hit the showrooms, folks could go down to their local Hyundai and Kia dealers, crawl under the back end of the various models, and see if the mufflers look like the prototypes in the NGen presentation from 2017(?) or more finished versions large enough to contain the rotating assembly.
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