Pretty sure the pro kit is a 1.6" drop in the front and a 1.5" in the back for a 14'si sedan. Just going by memory though not positiveProkit. The sport lines are in the same 2" drop range that the skunk springs are in. The prokit are a 1" approximately while the H&R are closer to 1.5" and I believe the skunk2/sportlines are 2"-ish.