Depends on the application of what it will be used for??
Drag racing, road racing, drifting etc etc?
Widebody or standard body??
I do hope you realize it is not a Challenger vs a Hellcat, as a Hellcat can be an option of the Challenger, Charger and Jeep… They are the same basic vehicle with only the upgrades needed for whatever trimline performance package chosen…
Then you have the Scat Pack and Hellcat (maybe others) in the standard body or Wide Body with increased wheel/tire combo size to go with it…
For drag racing, the standard body would be better, but needs a stickier rear tire, whereas the wide body just has huge suction cups up front that are not needed, but for corners, the wide body’s much wider wheel/tires help it handle, and man do they handle the back road curves…