i was wondering i see alot of headers out there and wondered if anyone has used them. why are some so much more expensive that others and will those cheaper ones pass emissions (in Texas) thanks for all your help

 

Heres what I went with, the price is right, been running it about a year and I'm pleased with it. I pass emmissions here with it just fine, a header should'nt effect emissions.
http://www.ineedparts.com/auto-parts...-manifold.html

 

thanks any increase in power or chnge in mpg