AGFRC 15.5KG Low-Profile High-Torque Steering-Servo - Brushless Digital Metal Gear RC Servo for 1/10 1/12 RC Car Truck Planes (B44BLS V2)

There are 3* things you need to look at when choosing a servo, speed, voltage, and torque.*also need to make sure it's the right size and spline tooth count. The "9KG" is telling you how much torque a servo has, but in a touring car you'll also want something fast. This servo I have in my 1:10 scale buggy can rotate 60 degrees in .06 seconds and can do 15kg. So it's got good torque and it's super fast.https://www.amazon.com/dp/B07L83M8SM I'm not saying buy that servo, but it's a good one if it'll fit.