Use of ramps isn't absolutely necessary but is highly recommended.

Replacement chin spoiler in carbon fibre composite.

On underside of spoiler punch centre pin in OEM fasteners partially through to facilitate removal. Remove fasteners.

Set aside for re-use

OEM spoiler removed.

Locating Fingers on bumper assembly.

Push spoiler on to locating fingers on bumper assembly.

Start at one side and work to the other.

Push pin in fastener to other extreme to enable fasteners to be re-used and install into underside of spoiler.

Resulting in this.