IFI sells Victors under
the VexPro name.
Before you start trying to chase down a specific controller, take a step back and figure out what you need.
Figure out what size and weight you're dealing with, and use that information to select your motors. Given the size of your motors, figure out what current your motor drivers (speed controllers) need to be able to output. From there, you can select a motor driver. My gut feeling is that a Victor is way overkill, so I encourage you to look around at all of your options.
The Arduino is a great controller because of its ease of use and relatively low cost. It doesn't have "PWM ports" like we're used to in FIRST (where there's a set of 3-pin headers with power, ground, and signal), but it definitely does have PWM output. Look closely at the picture and you'll see them in the top-right corner of the board. You'll have to manually connect power and ground, or
buy a board like this.