Where is the egr valve located on a 1992 Mazda b2600i?

I Called the Mazda dealer today and talked with the Mazda Tech and asked him the location of the EGR valve on the 1992 Mazda b2600i. According to the tech only the California models have an EGR valve, I would think that any state with similar laws about vehicle emmisions would require the egr valve also. My truck is from Montana and it doesn't have an egr valve which explaines why I havent been able to find it.