I have lowered my 400E with H&R's, and have had good luck up front with the specs for the stock sportline model. the rears are another story. you can have the toe aligned to spec, but your camber will be EXTREMELY negative, probably -2 degrees or more. This eats your tires at an exponential rate! To compensate for the camber, you are going to HAVE to dish out some money, call RENNTECH, speak to George and buy the kit, which retails for around $500. This is the ONLY way to do this. I have successfully ovalled my subframes and adjusted my camber back to spec, but this threw the rear tow WAY positive. The stock tow adjustment just wasn't enough to compensate for the change, so I decided to spend the money and do it right by purchasing the kit. In the kit there is a concentric lower control arm bushing as well as one for the tow adjustment.