Looking to replace the suspension of my death trap, as my gf calls it. I'm running stock and its definitely time to upgrade. I don't know much about coilover brands for the 300. I would appreciate any input and explanation for my fellow Z'ers. I am looking to do some track racing so I was looking for 12k-8k front, 12k-8k rear. AND one more thing, I am considering obtaining a carbon fiber back hatch, does anyone have any info on that? I'd make it myself, but thats a little complicated for my talent. Thanks