AMT made a 65 or 66 Buick Wildcat and If I remember correctly an Electra. But these were made back when these autos were current. Try the ERTL/AMT web site for a list of their current kits and maybe a list of kits to come. ERTL/AMT has been re-releasing kits of cars from the mid sixties, including the luxury cars of the day.
I to would like to see the big Buicks re-released like the Wildcat, Electra, and the duece and a quarter, again. rangerj