Any more progress with this? I would love to get 12" rotors on my 98 SSE.
I was replacing a snapped wheel stud this weekend and did notice the braking components are WAY different then my GTP'* parts. I did notice the bracket is built into the caliper and the inner pad actually clips into the piston of the caliper and the knucke holds the outer pad securey in place.
If the holes are the same difference on the GP and Bonneville for the calipers to bolt to the knuckle I wonder if grinding off the bracket piece of the knuckle will be enough to just do the w-body upgrade. I'll be measuring one of these days. I hate driving the Bonneville after doing the GXP brake upgrade on my GTP. THe brakes on the Bonne feel like mush.