Here's my thread on Swifts
, I highly recommend it if you really want to lower on just springs. They are the only linear springs made for our car. I've seen the dyno data at their facility and its not only consistent throughout the entire compression, it also has the fastest coil response which is great for feedback and smoothness. But I think if you want to really drop the car, want better handling, want everything to be adjustable, coilovers are the only way. BC coilovers come with pillowball/camber adjustable tophats. My plan is to get a set of the inverted BC Racing coilovers and upgrade the springs to Swifts in a few months.