The
(here) bit in my post above was/is a link to the FrSky conversions.
There seem to be more brushless systems around than ever, Novak, Orion, Tenkin, the Losi stuff and on to the Hobbywing and Ezrun systems. I am sure there is other stuff coming out of Asia under all sorts of names, even the ready to run cars have low power combo's fitted.