Not sure why people claim the Donaldson Blackwing aircleaner cannot be used on a C6 other then some marketing hype from others but we installed one on a 2007 C6 along with our Team ZR-1 "ICEBOX"

After install customer went for a test run and was very happy with the performance and the sound of exhaust when using a freer flowing aircleaner and the colder aircharge to cylinders

Note : Customer bought the aircleaner and airbridge from WCC for $435 ! which we consider way high pricing and the airbridge is not designed very well.