I swapped the '95 LS400 brake system to my SC400 and it's a lot better. I use SS lines, ceramic, drilled/slotted rotors. I haven't tried to upgrade a single component at a time to see the improvement, but I believe each of them is an advantage over stock.Put on slotted rotors, stainless steel brake lines, with PosiQuiet Ceramic pads as recommended by R1. My LS400 stops wonderfully quick, and more importantly, brake modulation is wonderful. My new LS 430 feels like crap now. I'll get the same setup for the LS430 as soon as I can.