That sounds to be about the worst plan possible. Might as well just forgo springs on your coils...
Seriously though, start with the PSS9s slammed, and if you need more, try your springs. I see many spring perch incompatibilities in your future.
Mods : Performance : Active Autowerkes Stage 1 C38 • New Subframe and TMS Rear Re-Enforcements • Upgraded VANOS seals • M3 Fuel Baffle • KW V2 • ZHP Control Arms • E60 Short Shifter
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