My aunt has that exact dishwasher in her garage. According to the date code, it is from 1994. Its model number is KUDD230B0. Inside, it looks pretty much identical to my KDS-21, except that the upper wash arm is plastic instead of stainless, and the detergent dispenser is white instead of turquoise.What is the model number of that machine? Do you have the pics of the inside?
This thread is about the KUDS25 that is available.
You can see the whole thread I did about the KUDD23, here.
Thread 'KUDD23 saves the day'
https://automaticwasher.org/threads/kudd23-saves-the-day.85076/