D2's are the answer, I've used them on flattys and fattys and they do transform the car. My fatty had a coilover setup pieced together from old group buys including Cusco camber plates, the D2's just blew all of that out of the water. I slapped a set on my flatty and autocrossed the piss out of it, they just plain work.
I actually have two sets NIB I should sell but they sit at my house in the North, won't be back there until May.