Currently running Bilstein 5100s with the Eibach 112-620 spring. It's a good setup, but soon the front bumper will weigh more, and 2 batteries and a winch are already in place. Does anyone know the specification for Eibach 700-lb that fit the FJ? Their site is less than useless, and I've been unsuccessful searching for this information. The Eibach ID numbers describe the geometry (length.diameter.rate) of the spring, but the 112-620 doesn't fit that pattern, so I don't know where I'm starting from. Thanks.