Corte Loco

I'm looking for a set of Bilstein sway bars kit for a 993C2 with PSS9. The C2 was converted to a GT2 body and 993tt motor. Does any difference between C2 and tt suspension? I found that some dealers sell H&R for C2 and not for tt. Can I combine H&R with PSS9? Any help?

Thank's

Jorge