Join Date: Mar 2010
Location: Minneapolis, MN
When I put mine on, this is what I did. It may not be as easy as "eyeballing it", but I get bothered by inaccuracy in measurements. Do it right and avoid headaches later.
1. Trace the spoiler's "foot prints" on cardstock and cut them out.
2. Accurately measure the feet of the spoiler to determine proper placement of the holes on the corresponding cardstock cut-outs. Mark placement and then check the cardstock feet/holes by placing them against the actual spoiler feet.
3. Do a rough placement of the spoiler on the trunk, marking the edges of the feet with masking tape, essentially "boxing" your placement area. I lined up the trailing edge flush with the edge of the trunk.
4. Place your card stock feet in the boxed off places, carefully observing proper orientation. Using a cloth measuring tape (or string), adjust the cardstock feet as necessary until you've got even placement down to the millimeter.
5. Tape down your cardstock. Do a final verification of placement by resting the spoiler on your cutouts. Eyeball it and check measurements one more time to make sure you're dead on.
6. Once it looks good, use a scratch awl and a step bit to make your holes. I made sure the entire area was taped off in case of slips.
7. Attach the spoiler. I used clear RTV silicone adhesive around the perimeter of the holes before I stuck it down and put in the screws. 2 years and no problems.
If you have some extra time, you can use touch up paint around the holes if there's bare metal. Shouldn't be necessary, though if your silicone is done right.
"You all know I take great pride in my title as Mr. Positive."