Project High Impact: 2013 GT500 Spoiler Our 2013 Mustang GT, AKA Project High Impact, got upgrades the same day it showed up in the parking lot. We have been installing and researching a lot of parts for this car ever since that day. We have a lot of fun and exciting things that we can’t wait to share. We don’t want to keep you guys in the dark any longer. Check out the new addition for Project High Impact – 2010-13 Shelby GT500 Spoiler/Wing. Check out the blog and you can see it compared next to my stock 13' wing.