Peter,
Should be no problem except, say at Servall for example, they will want FSP part numbers from the model and serial number.
Also the cost of new racks. That Kenmore was about a $300 machine.
There three types of dishwasher venting regardless of brand. Top of door, inactive, top of door active, with a solenoid damper shutter, and bottom of the door, for highest end models.
If he has access to used racks, just match the style. Nylon are less prone to rust.
There are also close out, clearance, and floor model, and used machines for good prices.
My sister in law got from her appliance repair man, a slightly used black Kenmore Elite with a stainless tub, turbo zone jets, for $250.