determing exact manufactoring date

[themacguyver]

Hi, im trying to figure out whether my 98 ford e350 7.3L van was made before or after 12/7/98. I need to replace injectors and have found that the injectors were changed for trucks manufactured after 12/7/98. My door post sticker indicates the truck was manufactured in 7/98. Is there any way to find out what the exact date of manufacturing of the vehicle is? I do know that i have bought some replacement parts for my truck and the dealer has given me 99 model parts as they are the ones that fit. Also how can i tell if my truck is 98 or 98.5 or 99

Thanks

[mick883]

i have a 99 f 250 diesel and I was wondering the same thing. I do you know when exactly it was built? I am the 3rd owner so no orgional paperwork to be found.