Thames & Kosmos Build Your Own V8 Engine Race Car – STEM Model KitCar nuts and engineers of all ages, gear up for an epic automotive adventure! Build your very own model race car from the inside out. As you snap each piece into place, youll uncover the amazing secrets of how cars steer, shift, and speed through the streets. You will create a working four speed manual transmission with reverse and neutral, a drive wheel torque differential for better traction and handling around curves, shock absorbing suspensions,