RazoE;1490417 said:lipstick...
seriously..
screw in the plastic tabs on the spoiler, mark the bottoms with lipstick, and position it on the trunk/sides and press down..
it'll leave an imprint that can be wiped away incase you need to reposition..
it's what I did..
sounds good. my friend once told me to use some kind of white powder but i dont think it will work..lol..