So unfortunately for the provider's poor English, this modification for Skyrim is a bit "unofficial". The names of the armor and weapon are poorly given... Here are the names of the items given in this mod:

Gloves:
corruption's grasp

Armor:
coruption's enbrace

Black flare (fx)
coruption's flair

Boots:
treads of coruption

Helm:
visage of corupption

Weapon:
El'druin the corupt

So if you are wanting to import these directly to your character, you would use the "~" (console command) option and type in, "help "coruption's enbrace"" to get the item ID. Unfortunately, I cannot give the item IDs because they could be different for everyone, depending on what other modifications you use.

Upon subscribing to this mod, the location IS in Whiterun. Go to the Temple of Kynareth and once you enter, go to the room on the right (base floor) and look for the chest with the name, "coruption". All the armor and weapon is in that chest. I don't suggest using this mod however... The looks are neat but the armor is lesser than lore-related and it really seems unprofessional as far as normal mods go.