Thank you everyone! I had a good day, and I have chocolate cake leftovers.
My wife gave me a hoodless grey hoodie (so, a pullover sweater?) with a Corvette logo, and a black Grand Sport jacket. I remember her asking me months ago what model my Corvette is and what Grand Sport meant, and I told her that during the early C6 years they stopped using the Grand Sport name, but the Z51 is the same thing. I think my car nevertheless qualifies as a Grand Sport, and I will wear it with pride.