JRZ has a lot of winning pedigree, but they haven't been my choice when I dropped big money on shocks (twice). IMO, 18k would be in the upper range for a street tire car (with aero) up front. That is what I use with a 315 A6 on the front. I haven't looked at Fortune dyno's, but lower priced shocks tend to be mired in considerable cross talk, that makes them difficult to fine tune. I question how many valving options there really are for stance. They use a small shaft, etc, which would relegate them to ripping off Koni pistons and/or making their own. My guess is all they do is vary the shim stack and can pressure, then slap a "custom valved" sticker on the box.
I just had these built...I am excite:
Replacing these: