Started off in 1973 with a 1973 convertible and followed (in order of owning) with 1975,1977,1989,2005,2008,2011,2012,2016,2017,1999,2003,and 2021. C8 is by far the best of the Vets I've owned but I miss the 03 Z06 very much. Sorry I sold it!
My car is a non Z51 and I purchased the spoiler from a guy who had his Z51 spoiler replaced by the high wing spoiler. If there was a template included with the high wing the tech threw it away.