Has anyone tried to install the wicker stage 2.5 upgrade from ACS Composite on a Grand Sport? I took advantage of a Black Friday sale on ACS and order a pair of the 2.5 wicker upgrades. As soon as it arrived I tried to install the pair but to my surprise the holes on the wicker did not match the spoiler screw sockets. I doubled checked the part number and it's suppose to be compatible with both the Z06 and GS. I suppose it could be a manufacturing defect. It's just strange, I've ordered lots of stuff from this vendor in the past and never had an issue. I left a message on their technical hotline; hopefully, I can talk to somebody this week and get a replacement part out. The 2.5 in wicker is slightly larger that the GM EOM stage two version. Looks really aggressive. I'm a bit disappointed that I could not get them installed. Hope to have a fix soon. Keep you posted. Let me know if anyone has installed this on their GS.