Sad to say but his best options are to get it running and sell whole or if he can part it out to get as much as he can out of it.
Again, if motor is running and he videos of that, he will get more for the engine. Sell off any trick parts first, then he can sell it as a complete roller with interior but without motor and transmission. He would likely get $7-8k for the roller as it’s still a cobra.