For more info about this creation click HERE
The instructions are made in PDF format, and they look very similar to the LEGO Official ones.
IMPORTANT NOTE:
The instructions and the part list of both chassis include the steps to build all different wheelbases and fake engine configurations.
So if in the future you want yo buy a new bodywork you only need to buy the bodywork if self, not the chassis again. Or if you want RC and Manual versions of any car you only need to buy one bodywork.