[russellw]

I prefer the look of the previous Challenger as well as the V8.
The old 6.1L was 317 kW / 569 Nm.
The 6.4L production engine used since 2011 was 350 kW / 637 Nm, later increased to 362 kW / 644 Nm in 2015.
The more recent 6.2L supercharged Hellcat engine is 527 kW / 881 Nm.
The higher of the two HO versions of the Stellantis I6 is 400 kW / 706 Nm so that's more power than the 6.4L it will replace in most and a lot more torque. No, it's not even close to as insane as the Hellcat engine and, somewhat surprisingly, they have sold a not insignificant 56,000+ Hellcat powered vesicles since 2015 - including nearly 1,700 Jeep Grand Cherokee Trackhawk for that quick trip to the Outback.
They don't make up a large percentage of sales. For example, since 2015, 323,000 Challengers have been sold of which just 6,000 have been Hellcat powered, some of which (like the Dodge Challenger SRT Hellcat Redeye) are going to be rarer than genuine GTHO Falcons in the future.