Here is a response I received when looking for a part.
salvage yards
John -
In response to answers regarding your search for Corvette salvage yards, I live in Streator and am familiar with the operation of vette2vette.
Jason disassembles several Corvettes each year, usually selling larger components like engines, transaxles, interiors, etc on a prior request basis. Then he stockpiles (inside) the rest of the good parts and sells them as people want them.
Jason is a good guy to deal with and his wife, who often answers the phone, is very helpful and knowledgeable.
But, Vette2vette is not actually a salvage yard with cars sitting in it that one can walk around and look at or look for parts. There used to be one called Michigan Corvette Recyclers that also might be within the 250 distance.
Terry
You might try them and good luck with your search. You might do some research to see if the strainer was unique to corvette or if GM used it on other models under a different part number.