I have decided on the Bilstein sport and H&R combo. The H&R springs pt. no. is 29800 The front sport Bilsteins are P36-0369 The rear sport Bilsteins are B46-2066 and they are a 12mm top mount. Some vendors have told me that since my OEM 20V does not have an original sport suspension that I should use the non-sport BE5-2593 which have a 10mm top mount.