Very simple on top of the 2 inner rear lights are hex screws 1 for each light remove them then remove both light harness and just let them hang you will have access to the stock spoiler from underneath of it i forgot what size wrench but just remove the screws from the stock spoiler and push the stock spoiler upwards removing it. Reverse this procedure with the new zo6 spoiler, i suggest u get it color matched, its such a cleaner look.