It's a regular Focus car with injector restrictors. In order to get the obtain insurance to cover younger racers at Ventura, the insurers wanted horsepower taken out of the car. They machined up some plastic restrictors that slide down the top of the velocity stacks. It's not uncommon to see the car run a Junior Focus race with junior at the wheel and then when the heat/main/whatever is over they yank junior out of the seat, restrictors out of the motor and dad/older brother jumps in and races the same car for the regular Focus race.