Prokits for ride and better handling...sportlines for lower and looks... get the prokits imo....sportlines handle like shite sportlines on 17s:aem cai, gst muffler, 17 konig villains, magnecores, ard 57mm tb, eibach sportlines, tokico blues, ingalls cambers, tsi side skirts, Century-Graco "sports edition" baby seat ( minus 10 horses )