[M_a_t_t]

When I got the notification on my phone I did think "finally, something that I could more directly apply"

I was thinking I could just use that adhesive spoiler and run it along the edge of the back window/c-pillar.

I hadn't though of raising the spoiler either. Do you think the angle of the spoiler matters? The stock one on my car points a little toward the front of the car, but if I'm making risers I could probably just account for that.