I've painted a Vanguard Sonic with weight-reduction and wrapping. I've used many Japan Cup 2021 parts! Of course, I've also changed the bearings, motor, shaft, and gold terminals – the basic components! B-MAX specification. The motor was a Japan Cup 2018 Hyper Dash Motor 3! I don't know much about the specifics of Mini 4WD, so please judge from the pictures. I will ship it immediately upon purchase! Thank you!