Bolt on, only difficult one it the one that is accessed from under the roof fabric.
Remove parcel shelf and remove bolts around perimeter of roof, lower roof to half way and remove seal trim around body opening then remove bolt from underside .
Remove rear bumper, rear lights and surrounds, remove side skirt and trim cover on B pillar.
Remove Ariel, single bolt in centre underneath in boot.
Remove boot lid strut and unbolt boot lid.
2 bolts where bumper clip is
1 bolt where skirt clip is
2 8mm nuts under the B pillar cover.
3 bolts along top under hinge.
Protect paint edges then lift up and out.
Fit new wing and reverse.