Don,
Thanks.
Yes they do. They have the shield, corrected thrusters and the proper end caps for the radar etc. And you can get the Space Model Systems decals in 1/24th from the CultTVMan website.
You'll want those for the adapter section stripes from the early flights or the velcro patches from the later ones.
CultTVMan also offers a 1/24th Gemini cockpit detail set. It costs twice the price of the kit, but if you plan to display the spacecraft with the hatches open it will make a difference.