Just got my D-specs installed today! Running 6/6 FFS for a few days to get a feel for them. Initial impressions are that they are very nice, no bounce and the car finally feels like it isn't falling apart again! I am running them with 06 USDM gray springs on my 06 2.5i sedan. I might be interested in running it at 5/5.5 FFS but we will see. While I was in there I took a look at what I could and I have some small leaking on my axles up by the tranny but besides that, no cracking, swelling, etc on anything else.