After reading the good news about $125 lowering springs from neuspeed..i called them and the tech guy told me these are NOT the right springs for a 400e/e420. THe front ones from h+r are heavier then these..due to the weight of the 420 engine. He told me h+r has different springs for the 400. He also said Neuspeed used to offer these, but due to the fact they were not doing Mercedes anymore, they had been sold out of 400 kits a long time ago.
the tech said they "might" work, but that the springs were definitely not the right front ones for the car.
NoDubs..didn't you ask the tech guys at neuspeed before you picked these up?