The 2021 Widebody Scat Pack Shakers are starting to arrive at dealers. See Katshot's Sept. 4 post. Challenger Widebody line expands | Dodge Challenger Forum You can order an R/T model with the 392 engine. Here are two photos.
While the Shaker does give that "old-school" look, it actually gives decreased performance. Form over function.
That wasn't the case with the original 1970 shaker that was mounted directly on top of the carburetor. Here is a photo of the shaker base that directly sat on top of the twin four barrel carburetors.