no, i don't think it will be worth it... because i asked this same question before... in some cases if you do not properly match it with the rest of your exhaust and other engine components it may cause a decrease in performance... but if you want to do it, choose carefully. good luck
maybe cause i dont really know what a header does. i just see what people have on their cars, and put it on mine<intake, exhaust>. but most of those peoples are manual drives, so i tend to ask just in case.
it looks like the k&n intake sucks. i wasn't planning on racing my car<more for show> but now that i see this, i think i'll try the Injen like i was planning to in the first place. i'll just wait until someone has actual results using the header because, just because its for show, i dont want my car being slowerrr.