Could put a box on it but id be hella worried about the weight at that point… honestly, get rid of it and put the funds towards an Apex build or some such.
Also, you wont be gaining much power without switching out the controllers, at that point, you may as well do the Apex or other MTB build
i have one i need to sell,i dont ride it. im 230 in gear in my opinion im the heaviest rider that can ride with the springs provided. The floating feelong and torque effect are odd. it will climb anything though