I was at Town North Nissan a couple of weeks ago after they said they couldn't install aftermarket fenders on a Nismo of a local forum member because the door needed to be removed
I even verified in the service manual that the base is identical to Nismo when it comes to the front fenders, and when I told them only the bumper, side skirts, and fender protector have to be removed, they still insisted the door has to come off on a Nismo.
In the picture they sent the owner during the install when they said the door had to come off, the car had the wheel off and the side skirts still on
I said if they can't figure this $hit out, you probably don't want them working on your car.