EGR question: I bought an AC EGR valve from Amazon for my 1985 V6 GT, but could not find the numbers on the old EGR valve to find what size washer I need to install on the new one. I read many posts and am still confused - is it a washer that is 11/32" in diameter that needs to be in there? What was the original OEM number for an EGR valve for a 1985 2.8 V6 Fiero if anyone knows? One site says it is a 17110813, another 17385897. Thanks.