Probably. The way it's hooked up now, each gator hit is assigned to a keyboard key.... so hack a keyboard or use an encoder and hook the switches in their heads and a ledwiz or equivalent for the lamps and you are good to go. All the lamps, digits, ect are hooked up to the output system.
The only thing that looks a little iffy to me are the motors. It appears that each gator has a timer counting from 0 to 5 when going out and 5 to 0 when going back. So no speed or direction really, but they literally just got done with this one, so I'm sure the motor outputs could be modified.