Hello Ken.
That person in SA is me.
I bought a KF5 with the Ellison Body in it and my Maintainance MAN didn't want me to fly with it because he doesn't like them.
He sourced a MA3 SPA for me and I still have the Ellison.
Send me a personal mail if you are interested. (in why he didn't like it and also if you want it).
My motor is a Franklin and after much chatting with the Franklin guys in the States, I see they are talking to Rotec about a throttle body for the Franklin.
Kind regards
Reid.