I've owned 3 CD5's in the past and you're very lucky to have bought one! It is extremely reliable, having the 94-97 models built in Japan.
Problems I've noticed over the 3 were the antennas, door locks, clutch master/slave cylinders, window modules.
Not much really...they are very tough and built to last. If serviced well, should take you to the 300kms mark easily and beyond.