hiya mate iv got 19's and lowered the car around 15mm (think its that amount) on just weitec springs rides abit firmer but definatly handles better and is a cheap option!!!
But i have to be carefullover certain speedbumps as i suffer with clearence probs sometimes, put it this way went over a dead rabbit and cleared it up big time made a mess!!! Doesnt help having the DC system on though as its twin pipes of the manifold, no Y section so it hangs lower!! ill post a pic up of my car so you can see how it sits