Do a google search for "ehbg-16-pdf". It's a write up on helicopter set-ups and in the article has a very detailed description of the difference in Bell, Hiller, and Bell-Hiller and what each does. Also has some very good info on set-up and flight characteristics.

If you're interested in the HB CP2 set-up, Heli-hobby notified me today that they have them in stock now. Don't know for how long though. I already got mine from Heli-fever so I won't need theirs. Just haven't put it on yet. While we're at it, Heli-world has 3s lipos for 20.00 and a shaft and auto rotation gear mod that will fit the blade. Much stronger shaft and you don't have to dismantle your whole bird to change the gear, if you do happen to bend it. Haven't installed those yet either because I haven't had too much time to fly lately and if you don't fly you don't crash. So maybe I should change my slogan to "I don't have time to fly, so maybe I'm not" (or someting like that). Please note that I'm not advertising for these companies, I just like to pass on good mods I locate to my fellow fliers.

You should be able to get the 11t from heli-hobby or any place that sells electric motors. I personally found the 11t to be way too high in head speed and lost some control. Although the reason I got it was because Horizon recommended it if you use 2s lipos.