Do a search of s281 on SVTP in the sn95 section.
You will see the newer design authentic Saleen s281 spoiler is a no-no.
MOST of the are arriving warped, damaged, and simply not fitting right.
They need to be heated and re-bent back into shape.
Also, it attaches with 2 bolts, then the rest is all 2-sided tape.
What a joke.
The Kaenan has been found to be of much higher quality.
It's fiberglass, has a 4-bolt design, so no other fastening is required.
I have an ABC Exclusive and the fit was perfect also. And it is ALSO a 4 bolt