what is your opinion on them? 
try searching HT for this info… if i recall correctly… theres an ongoing debate between these and omnipower… so far it looks like d2 is just another generic product tryin to force itself onto the market with omni… 100 bucks more gets you 36 clicks or something like that… quite frankly… i wouldnt bother…
i dont have’em on my car but, my brother has’em on his 240sx and they’re super stiff and i mean STIFF…whit the cusco bars all around it, it handles hella nice…barly any body roll around coners…i say its 4x better than my tein adj. coilovers.
Factory D2s come with 15kg/mm front and 9kg/mm rear for the DA.
It feels really stiff for the first little bit, but you get used to them. I spoke to D2 and they give you the option of choosing your own spring rates. So you don’t have to pick what they give you.
I’m currently riding on 16K front and 16K rear (H&R Roadrace series coilovers) and now I want stiffer for the track. I am a bit concerned about the shock quality of the D2s, though becase not many people have them yet.