i am going to buy a new header i just don't know which one. i want a one piece design that is 4-2-1. right now my setup is Y8 head and IM with a LS throttle body, test pipe and thermal R&D exhaust. i may also get a cam this summer. the 2 headers that i am looking at are the RS-R and the DC Sports. i found a comptech header which i hear are very good but is also much more $$. i'm looking for opinions, or dyno charts on these headers or any others that are good. i'm not looking to get a $500+ custom header either