I need to do the ball joints on my '86 C10. All the books, even GM, for the lower ball joint list a "regular" and "oversized" Moog, Spicer, acdelco, all list 2 for the lower? How do I know which one I need? Well, Moog instead of oversize lists "Enhanced Design". Does the hole on the lower arm get reamed out during the course of service? They truck has 168k mi on it, the ball joints have never been serviced. My inclination is to just order the oversized ones.