I'm running the qa1 single adjustables, only been to the track once, so I'm still playing with the launch. But I cut a 1.68, 1.63, and 1.61 before I left. Next time out shooting for some 1.5ss!
I was thinking about some qa1's or either those d specs with new lower bushing replaced in the rear shocks I was looking for some feedback on the d specs after track and street abuse. Qa1's seem popular tho for the rear.