Lego APC suggestions and help

So, I finally got the MouldKing 6.0 to work and have finished my APC hull as seen above, I wanted to ask for help on how I could go about improving the torque and speed, I am currently using two L-Motors stacked and connected directly to the drivetrain made up of 4 differentials. What could I do to improve the torque? Without having to lengthen the vehicle as, I had thought of using a gearbox but lack the space for an automatic one. submitted by /u/Low_Contract8613 [link] [comments]