Thanks DD. I did speak to the mechanic again with the invoice number for the job but he didn't have the part numbers on record. Bummer! All he gave me was a phone number to a brake place that reconditions brake boosters.
What work is required to get the brakes back to the normal setup? Is it simple? They are disk brakes on the front from a 120Y and standard drum brakes on the rear. Cheers.
Compared my engine bay to a friend's 78 Corrolla and the boosters were different
As requested here are some photos of the my UBB (Unidentified Brake Booster):




