GGG... I think they're king springs - not 100% sure though... I had the dudes at Keith4Wheels do the wheels and lowering.. As for the ride, you can notice it a bit, but I wouldnt say that it's really bad... I live on the southside and the roads are fukn crap and I'd say you'd feel the bumps probably around 15% more, but the improvement it made to handling is excellent. I'd recommend it to anyone, heaps less understeer!!! Damn front wheel drives