Having seen both the Ultrex and Kando headers, I would very much recommend the Ultrex ones.

Quality is spot on and the welds are very clean. They line up properly and for $599 I wouldn't be stuffing around waiting for parts from Jap land.

Empire headers....I have seen them, and the quality is what you pay for.

Ceramic coat if you have the cash to spend, and if you want to wrap them (especially UEL) pay someone to do it for you.

On the topic of ceramic coating, from what I have heard I think its around $250-300 for a set of headers.

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2005 WRX STI