4 cyl headers?

Anyone in here have a header on their 2.7 four cylinder? I have the access cab 4x4 with the 2.7 manual. What are your opinions, noticeable increase in power? What is a good product to get? Should I get ceramic coated ones or not? I only have 5000 miles on my truck, would headers void the warranty? I hope someones has some good input.

 

bump

 

Ithought about getting the Doug Thorley headers for my '09 2.7 but didn't feel they were much of an improvement over the stock exhaust manifolds. Toyota getting 159 HP out of 165 cubic inches ain't doin' too shabby.

 

anyone?

 

Not sure which headers to recommend but you should do the intake too if you haven't already. Also, on this site there is a section for "street trucks" and a "4 cylinder" section, you might want to ask in those too. http://www.tacomaworld.com/forum/