So our team spent most of the off season perfecting a 6-CIM, 2 Speed drivetrain system (see how well that worked out?

) using
these.
Anyways, we are in the process of trying to find a better gearbox, preferably single speed. At the moment, our preferred choice is
this.
The problem we keep running into is that we are using the VEX Versa Chassis and have no way of connecting the single speed gearboxes to it. Does anyone know of a way to do this? Or should we just stick with what we have?
Thanks