in 01 mainly the sport trac had some changes half way though the model year, ie. oil filter, oil filler cap location, are the two noticable changes, its kinda like a half year
My search on "job 1 or job 2", Exact Match, Titles & text boxes checked, and All Posts (you can also do a search on Posts older than 1 yr. to get more info.), but here's a good link from my search.
I think its a job 2 if the last 5 of the VIN is >31000. Somewhere close to that anyway. The window stickers also say "job 2 order" on them. The door pulls have a place to grab them. The air dam is shaped differently. The job 2s drop down lower out by the wheels. That's what I'm aware of anyway. Oh, if it's Alloy or Orange it's a job 2.
On the electric rear window comments, it does not have to be a Job 2 if it has the electric rear glass. That option was introduced in the middle of Job 1 production (before Job2 production started) so there are some Job1 STs out there that have the electric rear window, although the majority of them will be Job 2s..