Been doing this all day pls send help. (More hunter sets!) : r/Transmogrification
2.4.3 Engineering contains a T6 level epic head that was orgininal added with black temple as a catch up item. Here is a picture that compare T4 Hunter head with the mail
Engineering Goggle Upgrades in 2.4 | Kaliope's WoW Crafting Blog
surestrike goggles v2.0 | That Was an Accident!
A bit of technology in a world of magic | TechRepublic