Friend recently put his Challenger Hellcat widebody on its top in a low speed, grassy ditch shunt.

Fewer than 10k miles (pretty sure). By report , one side, top and hood are beat up. He's shook up about it of course.
Local bodyshop sounds to be salivating at the prospect of repairing it. I advised him that if he fixes it, he will own a car with markedly diminished value. Any insight into drivetrain value alone? Other advice?