Call the local autozone store and ask for the most experinced person they have cause they do sell them. Its just that most people that work there, there knowlegde is as far as the comp.

then check Jegs or another Perfomance outlet, you might be able to save some money buying after market. other than that check with a local rack and pinion/steering gear rebuilder as they might be able to get them for you. cant help you with numbers or sights