To make this really simple-the SH is unique. It has ATTS and the other 2 models don't. This setup is very different in front from its brothers. The springs, Upper CA locations and shocks are not the same and in fact the springs and shocks have different part numners from side to side. You want more-the radius rods and front sway bar links are different too. This has been one reason that many manufacturers have chosen to work on the Base model cars only. Neuspeed and Eibach claim that their "sport" or "Prokit" springs may work properly on the stock shocks. There are several alternative installs available for the SH-but they will be more costly to do. BTW: The rear of all 3 models is identical. Get used to the fact that the SH is what it is.