I bought some large-sized alcohol wipes to make sure the surface was clear and clean (I'll also use these to clean the touchscreen for the matte screen protector I'll also install). All the following pics are my test fitting.. I need to do more research on exactly where it should be mounted in relation to the hatchback lip. But I think I have it pretty close. Keep in mind that this is the spoiler just sitting on the deck lid, not taped down yet. You can see how well it sits/fits to the shape of the deck. Once I decide on the proper position, all that's required is affixing the edges first, then peeling back the 3M tape from the center-out. Very easy and I'd say more than worth the $160 landed cost, plus some painters' tape.