I'm looking for lowering springs for my 2007 GXP. The question I have is if anyone has installed the H&R springs on a gxp and how much lower did it get? Are the 2.4 solstice the same height as the gxp? Or are they the same height? If so how do I know how much the h&r spring will loser my car? I just want about a 1.5 inch drop, which is why I want springs. Coilovers would be over kill as I would not be using them to their full potential on this car.