Tim, that was a very nicely commented pictorial of the Chevelle convertible kit. I have a couple of comments.
The original 1969 Chevelle did come as kit hardtop with promo versions of the hardtop and convertible. It is interesting to note that the 1978 convertible kit box showed the interior and boot of the original promo on the box cover, yet the the kit inside used a different interior tub and boot which included the downward arms that hid the convertible mechanism. I am guessing that in 1978, somebody at AMT used a promo, or parts of it to mock up a model to do a photo shoot. This is after AMT fired all the artists and used actual photos of the kits on the model boxes.
Round2 has done a terrific job at bringing back the old kits. I particularly like the inclusion of parts missing from previous re-issues. The pad printed tires are icing on the cake.
I have several versions of the AMT '69 Chevelle. As far as I can tell, none have the correct side marker lights or trim on the side. But, it is in no way a deal breaker. I shaved off the '68 chrome trim on the rocker panels made new thin side marker lights out of Evergreen styrene. You have to make new wheel lip moldings from Evergreen as well, but again, no big deal.
With the inclusion of '68 Chevelle windshield glass, making a '68 is easier. So that is a good thing.
I also looked at the two kits I had; an original 1978 issue and the new Round2 issue. However, after looking at your photos I realize that I missed some important thing Round2 did. I am glad you pointed out them.