I'm not a fan of the 3D Carbon GT500 spoiler because of the painted on Gurney flap. I much prefer the OEM spoiler although it is more expensive. You just paid a big premium for a Boss over a 5.0 so why not get the real thing?daddyfixer said:You might want to check out the spoiler from 3d carbon .com . It has the Gurney flap, and no drilling . Easy installation and it looks great. I have had many compliments.