It 19 actually.
Different belts. Intercooler fan. Injectors. Remapped ecu. The conversion is available from the manufacture for $1300.
Other than that it's the same car.
However there are a few new models available in the lineup such as the 120hp base and two models of the RC (rock crawler). One uses the base 120hp ace engine and 20" travel base suspension and the over is the equivalent of the RS model but both come with large 30" tires stock and have rock crawling additions such as rock sliders, more clearance, winch points (winch available) and different spring rates.