Here is the new Undercover Extreme Series wing for the JCONCEPTS Cadillac ATS body. It bolts to the top of the trunk lid and has a 2 3/4" deck length when measured from the back of the body and comes with wing support struts. I've also added a 1/4" wicker to the 5/8" long spoiler lip. On the spill plates, they are 7/8" above the wing deck and are stepped. Its designed to stay just inside the 2021 NPRC wing rules. Comes with Hardware to install. Comes clear with protective film, ready to paint.