They are usually made by V cutting the originals, bending a little and then rewelding. Done properly they should be fine for road and light comps. I'd guess that the factory had proper forged ones made for their cars. The Safari ones used a pair of shocks each side. Replying here to your other post, the term "unequal length suspension" denotes that the arc of the top and bottom arms are "unequal" Top arm is shorter than the bottom. That allows a certain amount of negative camber to be introduced as the wheel rises which makes for safer handling.