I think its just stating which plant that motor came from so if there had to be a recall for some reason it may just be for motors from a certain plant. That way if they said "Motors from the Windsor plant are ok but the ones from Romeo have a problem" then you would know if you needed to be concerned or not. I really don't think there is a difference mechanincally with the motors from different plants since they are all made with the same parts the same way.
Whaddya mean I dont pay my bills?? Whydya think I'm broke!!
03 Lariat Crew 4x4 Line-x bedliner, Truxedo Lo-Pro QT Tonneau.
RIP [97 XL 4.2L V6]