If agiles are a direct replacement go that route. Another member here bought the ccv arms and his review was less than stellar. He said they were far from a direct bolt in. There's a thread where he elaborates but I'm not in a place where I can search for it.
"understeer is when you hit the wall with the front of your car, oversteer is when you hit the wall with the rear of your car, horsepower is how hard your car hits the wall, and torque is how far your car moves the wall."