Note that several of these mods appear to have significant problems (dirty GMSTs, broken quests, etc.) so pay attention to the comments and check them before use.
The Fench versions have been cleaned (every mod uploaded on this website must be clean, that's the advantage of a smaller community
)
Place Forte Redoran de Centurion (original tittle : Centurion's Redoran Stroghold Extension) was made by... Centurion.
Bal Isra Unleashed... is Indarys Unleashed, in its English version.
And finaly, Redoran Stronghold update was made by "MaxiPete". Please note, though, that it was translated in November 2002. So it seems to be a VERY old mod, which explains why it is hard to find...
In case you're desperate and want to try the French mods, there's a kind of translator avaliable http://ressources.wiwiland.net/spip.php?article1006 that should translate enough for the mod not to crash. Of course, the cells name will remain in French, and there might be some bugs, but it should be playable.
You can find it at the bottom of the page, it's called "Le Hotdogizer 4.7 (Fran?ais vers Anglais)" (The Hotdogizer 4.7 (French to English)), between "Le camembérisateur" and "Le choucroutisateur" (first one English to French, second one English to German).
I don't know how it works (never had to use it), and I don't even know whether the readme is in english.. So you might have to try a bit (hope you studied French at school XD). Oh, and the file in .7z, which can be extracted by softwares such as WinRar, 7zip, etc.
Hope this helped you.