I just realized that they are calling a futaba connector a hitec connector. I've never heard anyone call them Hitec connectors (maybe they were at one time) so you may want to continue calling them futaba connectors. lol
you're correct on the names of the plugs. That kind of stuff i usually just make myself so if you can buy it I'm not really sure where. Hobbyking.com used to have a lot of different connectors and adapter but it seems like that site changed and went through some downsizing since I last used it 5...