Head - Fiery Beholder Eye
This item can go for a pretty penny on the AH. It drops from a rare demon spawn in shadowmoon valley called Collidus the Warp-Watcher, along with 3 other types/colors of the same item. One is mail, one is cloth, one is leather and one is plate. Find out more about this spawn and where it roams over at WoW Rare Spawns!
Chest - Flamewaker's Tunic (Justice)
Legs - Flamewaker's Legguards (Justice)
Feet - Hurricane Boots (Crafted: Leatherworking)
Hands - Unclean Surgical Gloves (Icecrown Citadel)
Wrist - Doesn't matter, you can't see them.
Shoulders - Horrific Flesh Epaulets (Icecrown Citadel)
Back - Cromush's Cloak (Quest)
Polearm - Ranseur of Hatred (BOE, drop in Firelands)
Gun - Arcanite Steam Pistol (The Eye)
Here's a picture from the front, with the gun:
HUNTER BONUS ROUND!
Pets that work best with this set are fiery, orangey pets of course. Here's a list of my top picks for orange pets.
Orange Ravager - So bright! So orange! So cool looking!
Orange and Black Spider - Colors match perfectly, and if you're into pvp you can still look stylish!
Orange Fire Spider - This guy is a rare, and from what I hear a bit tricky to tame. Lovely glowing orange is great with the glowing orange on this set!
Red Core Hound - Can't go wrong with this classic.More glowing reds and oranges make a great match.
Two-Headed Red Vulture - If you're into birds, this guy matches nicely.
Red Runed Demon Dog - I love this pet. So cool looking and those glowing bits are so bright!
Brown Spiked Raptor - Awesome dinosaur action! Despite the name, this guy is orange and matches wonderfully!
Orange Striped Saber Cat - Tigers match pretty well, not my top choice but AWWW, it's a tiger!
Orange Deep Sea Crab - This guy looks nice, and if you're looking for a tenacity pet, he's perfect!
Ancient fire Turtle - This guy is a little more red than orange, but he's a great looking pet, and glowy!
Yellow Worm - I've never been into worms, but this guy is a yellowish orange that matches the set great!
Grey and Orange Felboar - This guy looks awesome, and has BRIGHT neon orange spikes!
Orange Shale Spider - I really love shale spiders, they are like elementals we can tame. I really love this orange guy.