I have a copy of the Unique Cars magazine. Got it from a forum member who bought a whole bunch and sended them to members all over the world.
I missed the Australian Muscle Car Issue 55 unfortunately.
"UNDERSTEER" is when you hit the fence with the front of the car.
"OVERSTEER" is when you hit the fence with the rear of the car.
"HORSEPOWER" is how fast you hit the fence.
"TORQUE" is how far you take the fence with you.