Yea airglass sells one that fits, but no STC for the 172 or my 175. I have told them I would buy one if it included the STC as field approvals appear to be impossible to get. Gary, at airglass, has said they hope to have the STC for the 172/175 this summer, but that's not helping me now. If anybody knows of one that is available with the STC please let me know.
Pat