The Eibach spring has more then enough available travel and no issues with interference as it is only slight bigger in OD then the OEM.
Here are a couple pics showing the difference between oem and the Eibach as well as the Eibach equipped shock installed, Waiting on bumpers so the shock is not permanently bolted in yet. Wow the spacer looks bad, It is polished so I guess the flash did something weird to it as it doesn't look that way in person.


