I had just replaced an ABS unit because of a faulty Ecu, but the main body was OK. All you would need to is replace the ECU from your unit. PM me you are interested. but let me know the Bosch unit number to confirm.
Sorry for the delay in replying. yes I had to remove the brake fliud reservoir to gain access. It is poorly designed in order to remove the ABS cover/shroud whilst it is easy to remove it is awkward to re install due to the length of the hoses.