Verified answer

Well you need to get a motor and an RC adapter that is compatible to the toy and is able to run the motor and the rest of the car. You need to open it up and fix it up good. It is a very long and hard process but If you have skills in technology its possible. Or you can go to a toy fixing place and they can fix it up.

It's very impossible to answer it here you need to see YouTube it not only but your gonna need lots of tools LOTS