I just got back from Pick a Part, and pulled an EGR Valve from an 87 F-250, with a 302 motor. The 1st numbers listed along the white electrical plug ( electrical part bolted to the top of the valve) is E-3TE. The 1st numbers listed on the one I pulled off of my Bronco are ET7E. I think I remember while at the Junkyard, I saw that the ET7E's were on 351 Motors, Am I correct? The P.O fully mickey moused my Bronco. The Numbers are also listed on a sticker on the back side of the valve, which faces the upper intake. I am just curious if there is anyway to determine the numbers aside from calling the dealer.