Join Date: Mar 2012
Location: San Francisco, CA
I think they were standard on the GT and GXP but not even offered on the base. I got one for my base 4 or 5 years ago, both for muffling sound and for looks. Nor were we offered an LSD (Limited Slip Differential), something else I added. The pins to attach them are expensive if you get them from GM, but generic aren't so bad from a normal parts store.
'08 G8 - VE Commodore SV6 - HW, Sunroof, Premium, Comfort & Sound
Mods: Commodore Conversion (Front Bar/Grille, Bonnet, Spoiler, Badges, Wheel Centre Caps) Steering Wheel Airbag, Holden Cluster, Leather Console Lid, Holden Shift Knob; Auto-Dimming Mirror (w/o airbag nag), S2 IQ Radio, VG Shark Fin, Aspheric Door Mirrors, Exterior Boot Release, GMH Rear Window Sunshade, GMH Radiator Cover, GT Boot Lid Liner, GT 2.92 L.S.D., Parking Sensors, Reverse Cam.