This is the tape you need to use. If you search for the 3m spec sheet, you will see it's on a different level when it comes to strength and durability. Also note, the link I sent is a new oem roll, there are vendors on Amazon that sell respooled rolls from a huge roll, I wouldn't buy that as one side has been peeled off. You will have to trim the tape near the ends of the spoiler with an xacto knife, but that's true for all tapes. My oem performance spoiler is completely flush with this tape except for the very very ends, but nobody can tell to be honest. Tape:
http://www.amazon.com/dp/B0016HM7SE/ref=biss_dp_t_asn
I also recommend using the bond enhancer wipe. It's not required, but I did it as an extra precaution:
https://www.amazon.com/gp/aw/d/B00RY...?ie=UTF8&psc=1
I'm going to warn you now, you only have one shot to get the spoiler on, once the tape sticks, it's not coming off.