[Bearded_Seamonkey]

With my ZLE, I went with the ACS Composites. With the black trim pieces from where the diffuser wraps around at the bottom behind the rear wheels, the ACS has a pocket built in that slides over the trim so there is no gap. It fits nice and flush. I believe I read where the zl1 addons will have a small gap that some people fill with black silicone or some sort of filler. Also, the rokblokz look flat and will not necessarily fit flush as well.