This is a custom designed 1/10th scale engine replica for the tamiya sand scorcher and rough rider, it is highly detailed and designed to every srb enthusiast who wants to add scale. The engine is a direct fit to the original chassis without any need for cutting, drilling or sanding. You will need to assemble the engine and paint it according to the instructions. note - If you require a better version of the instruction please email me. The vehicle is not included.