Two identical SCX30s. One stays stock. One gets upgraded. 👀 The next upgrade that makes a huge difference to the vehicle is installing a brushless system. This was by far the upgrade you mentioned most often in the comments! We installed: Injora Brushless ESC MBL32-Nano Injora Brushless Motor 4300KV Green Viper 1621 Aluminum Transmission Kit We also installed: Injora POM Sliders Injora Receiver T4DCM .