Hi folks, just a minor update for future people who land here from Google or wherever.
As mentioned earlier in the thread, I did buy the NOS sway bar, part number E3TZ-5482-A.
Immediately after that, border restrictions were reinstated which prevented me picking it up from my friend's place...I have since been able to pick it up.
It definitely seems to be the right bar for the vehicle, and the tag on it suggests it is the original Ford part. That said, I will note it is a 1", solid bar. Replies above, and other references online say this style of bar is usually 1-1/8". Maybe the "B" version is 1-1/8".
As far as hardware goes:
The bar included the rear bushings to the crossmember, and they are usable.
I'll need the retainers to hold them to the crossmember, but I think these can be "fabricobbled" without too much difficulty.
The front bushings to the radius arms are a non-issue, looks like they're commercially available (especially if I'm not concerned about going poly).
The U-bolts are a big concern. The originals aren't anywhere in Ford's parts network, Green Sales doesn't have them, and there doesn't seem to be any commercially produced equivalent, so I'm going to explore having something fabricated locally, but if I can get my hands on the correct parts I'd rather go that way.