Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Mortanis's Ribcage Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Mortanis's Ribcage suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Similar Items
The 5 items nearest to Mortanis's Ribcage (item level 187) in item level among Armor > Mail, Chest slot, from item level 175 to 226.
Blizzard numbers items as they are created, so the named items next to ID 184128 (184123 to 184133) were usually added in the same batch as Mortanis's Ribcage: the same quest line, zone, vendor or reward set.