They are awesome cars. Neighbor has a 392 Chally Scat Pak and we've gone for a few rides in each other's cars.
It's a lot of fun. We go head to head on the track now and then. I added a 3.73 LSD which helps me a LOT on the line plus the custom tune is flat out nasty. Eventually this car may become a forged 426 with forced induction.
i'm sure the 392 can be a lot of fun, but right now my normal driving situations don't allow for me even pushing the 5.7 that much. I drove the truck yesterday and had to pass an ahole woman that was driving under 50 in a 55 and punched it and the truck seemed like a dog compared to the charger lol