Just use the editor and make a list on those items, u can easily search for them in the editor if u open item section with it since the upgradeble ones are flagged upgrade.
As for mods or other support, as Elwin stated, interest for the game is pretty low.
You can try my latest mod if u want more castles in Debir area or close by to use for garrison space.
Mod also has a lot of shops for items and troops, so its easier to get some sets.
I do not support the mod anymore but here is a link to it.
http://www.mediafire.com/download/1j...ended_0813.rar
EA