dudeman

iTrader: (43)

are these any good. they are a stainless header which is good, but how how the as far as performance compared to other stainless headers such as kooks qtp? thanks

Hard Core Z28

They are based off the dynatech header. its not one of the better designed. Fitment is iffy.

hallass

iTrader: (21)

i have them on my car and the fitment is absolutely perfect. most people that knock them have no experience with them. i've had them on for a few months now. they slid in with absolutely no issues like most headers (k member, casting tab on engine block, steering linkage, drain plug, oil filter- all common problems when installing other headers). i didin't have to deal with any of that garbage and they slid in just as easy, if not easier than the stock manifolds came out. the only thing that was a downfall with them are that you have to get the gaskets and bolts for the collectors. the welds and merge inside the y pipe were awesome looking, and the header flanges(that meet the head) are nice and heavy. they have a ton of adjustment to get the clearance you want, whether it's to keep from banging the floor, or more ground clearance, due to the 4 bolt collector flanges. mine hits the floor on the passenger side, but my motor mounts are pretty beat, and i tucked the y up as close as i could since i'm running sportline springs on the front and i needed the clearance.
here's a thread on ls1.com that i put pics and actually a couple videos on if you wanna check them out. the part number for the gaskets and the size bolt ya need are listed in there somewhere too.
http://www.ls1.com/forums/showthread.php?t=40417