Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Guise of the Construct Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Guise of the Construct suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Similar Items
The 3 items nearest to Guise of the Construct (item level 437) in item level among Armor > Leather, Head slot, from item level 330 to 545.
Blizzard numbers items as they are created, so the named items next to ID 221081 (221076 to 221086) were usually added in the same batch as Guise of the Construct: the same quest line, zone, vendor or reward set.