I'm familiar with the the benefits of the SL and I'm also aware of the realized lift actually acquired from a SL, which happens to be greater than 4". I don't know if my last post was misread, but I chose the OME and I've had it for almost a year now in September. I have not stacked, and do not plan on stacking any spacers on it. I chose OME because it is truely the maximum lift you should apply to the WK before you really start changing the geometry of the front. Even so, with the SL, i've heard of failures within the drivetrain. So, I don't feel the SL is as reliable as it should be. I wont be stacking spacers on my OME, I don't believe the benefits of this approach outweight the risks of several components failing - it's too much stress. Just thought I'd clarify.