I almost forgot. You gotta find one with the hollow tensioner bolt for the cable to sit in against. If you don't get a bolt thing with it, it won't work unless you come up with an idea. I had to make one in a lathe from a large galvanized steel bolt from ace hardware.
the 1977mopeds motion pro has the bolt, I don't really know if the Treats! vortex model comes with one or not. (it's not in the picture) The CNC Throttles on ebay might come with one if you get the cable setup with it. The CNC throttle I got from ebay is the one I had to make a tensioner for.
not sure if it was started or not, but you may have to drill knarp catch on the throttle. as these do need cable knarps.