Just some general info on how sky quests work:
Each island has a number of trash mobs and a boss. Each quest requires items from the boss mobs and the trash mobs. Most of the quests require a no drop piece from a boss, then 2 tradeable pieces from the trash. The pieces from the trash mobs are generally not a problem to get - you'll have them long before you get your no drop piece from the boss. Each boss mob drops 1 no drop quest piece, and with 12 classes...yeah.
Here's a quick rundown on each quest, "easy" here means it's not super-rare to get:
Back straps require:
Island 1 trash droppable, easy
Island 2 boss droppable, very rare
Island 3 boss no-drop, 1/12 chance
Eye patch:
Island 2 trash droppable, easy
Island 3 trash droppable, easy
Island 4 boss no-drop, 1/12 chance (pretty easy honestly)
Sandals:
Island 3 trash droppable, easy
Island 4 trash droppable, easy
Island 5 boss no-drop, very fucking rare, 90+ Spiroc Lord kills, we finally saw it after about 80 kills. Haven't seen it since.
Shoulders:
Island 4 trash droppable, easy
Island 5 trash droppable, easy
Island 6 boss no-drop, not sure on rarity, probably 1/12.
Wu's Fist:
Island 5 trash droppable, rare for us - a gajillion island 5 kills and we just finally saw it for the first time
Brass Knuckles droppable - from Noble Dojorn / Overseer / Hand cycle, pretty damn rare
Neb Sapphire - from Island 6 Trash or Island 7 boss, no-drop, should be easy
Island 7 boss no-drop, probably 1/12
Sash:
Island 6 trash, droppable?, probably not too rare
Island 7 trash, droppable?, probably not too rare
Island 8 boss, no-drop, probably 1/12
Honestly, if you're asking these questions, chances are you're not in a raid guild or you'd know more about it hehe. Almost all of these items are best-in-slot items for a monk in the entire game. Even the ones that aren't, they're still awesome pieces.
Also of course, use the wiki!
http://wiki.project1999.org/index.ph...e_of_Sky_Tests