Is a 1997 Oldsmobile Aurora EGR interchangeable with a 1999?

I am looking locally for a used EGR valve for my Oldsmobile Aurora with 150,000 miles on her. My car is a 1999, and the used part i could find is from a 1997 Aurora. The shop did not have the interchangeable parts list for the valve. Would it be a match??|||call napa they can tell you