Time to upgrade the suspension ...

Ape Factory

Take a hard look at the Aragostas too, the S or the SS, since they're higher spec internals, aluminum bodies, etc...You can get them in true type or OEM spring location as well as either solid or rubber upper mount. As for ride height, it's one of the few options that'll allow you to go even slightly above stock ride height. The SS is double adjustable and most likely above your price point but I'd get a quote on them regardless. Might be worth it. If I remember correctly, the Z34 Type-S are 14K front, 10K rear and true type. If you do a lot of street driving, I wouldn't go with a spring rate that's any higher.

The KW's are tempting but a PITA to adjust and they don't come with upper mounts, forcing you to reuse the originals. Plus their springs, like the Bilsteins, are progressive.

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'13 Audi RS5 Misano w/mods-The Red Mist
'13 G37 IPL-SOLD