Celica GT has rear drum brakes which require frequent adjustments and really don't work.
Since you are replacing the rotor, look for kits to upgrade them to disc brakes, far better in stopping power and require little maintenance and no adjustment besides replacing pads.
Racers were all impressed with the GTS' 4-wheel ABS disc brakes, said they work smoother and better than MBZ S600's brakes.
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