I bought the Countdown '69 Chevelle convertible back in the '70s. Took me 20 years to finish it.
It had the '68 Chevelle windshield with the vent glass. Also seems like it had Firestone 500 tires, but they are gone now. The trim on the side is all wrong for a SS, so you have to remove it and add wheel opening trim using Evergreen styrene. It had bad tail lights and the wrong side marker lights.
Since then, I have gotten several '69 Chevelle hardtops from the '80s to' 90s or so. Same basic kit. Funny looking at the chrome tree, it seems parts disappear and something new appears. They must have revised the emblems or something as my three hardtops have slightly different looks. If you buy AMT '65 Elcaminos from annual release to the latest release, you will see what I mean; has 327 emblem, no emblem and then a different 327 emblem.
I have bought several Modelhaus '69 Chevelle rear bumpers and red tail lights. Not too expensive.
All in all, the Chevelle vert will be very welcome. I will by several, one may be a "68 Chevelle vert.