well I opted to stay with the factory suspension. but Upgrade the motor and esc, New steering servo and reciever. I have always been partial to Futaba so, I went with it. As for the servo, I chose a Savox SC1267 High Volt. The Motor I debated. I looked at many different brush and brushless, sensored and sensorless and chose a TEKIN 17.5T sensored Brushless motor. This is about like stock but so much faster.