OEM Toyota JZA80 Supra Turbo 2 Pot LH Rear Caliper.
These are the optioned "Bigger Rear 2 Pot Brake Caliper" off the turbo supras or optioned out non-turbo variants. These are a good bang for buck upgrade and for the time they came out in production held the braking record for a while.
Note: This is only for the caliper itself, no fitting or shim kits or pads. This is a direct bolt onto JZZ30 Soarers. Do note if your vehicle didn't come with the bigger brakes you will have to modify the OEM dust covers either with bending or cutting to make these fit.