Yep, he makes very intelligent decisions on what metal to replace Vs straighten. I'm surprised that he uses no / very little heat for shrinking metal. ( At least not much is shown on the vid ) Modern cars have very little adjustment in panels and about zero door hinge adjustment and he is still able to hold factory gaps.

Some make a fuss that the crush structure is compromised. For the most part, he uses factory seams as his joining points so it isn't any different than a factory car.

Based on the crash pics, looks like the cars are mostly sourced from the US.