Use this stock height replacement ball joint in SPC's adjustable upper control arms, p/n's 94305 and 94320. This GM metric midsized balljoint will also fit SPC's bolt in plates, p/n's 92006, 92008, and 92009. It is equivalent to Moog #5108. Want to improve camber curve or arm clearance? Consider SPC's 1/2" extended length balljoint, p/n 94019.