I just recently replaced the rear pads and disks on my 1990 9k carlsson. The old disks (very scored and worn right down to the 7.5 mm min thickness) were replaced with brand new RDA (Rotors and Drums Australia) slotted disks and new Bendix DB296U pads. Easy to do the change - tricky part is adjusting the calipers, but I think it's worked out ok and I've driven to work and back a few times (85 km each way) since without any issues.
Craig.