After battling an unsuccessful set of ls swap headers for 1st gen camaro I went to Henson Supercars and they set me up with a set of stainlessworks headers. These headers are the way to go! I made my own engine/trans mounts to get the engine as low and far back as possible without cutting up the firewall and they still cleared my control arms and steering box perfect! Only problem is the tip of the z-bar of the clutch fork side is rubbing one of the tubes, I might just switch to hydraulic so its not a big deal.
Here is a picture of my first set of "direct fit" swap headers, they hit the steering box bad and the passenger upper control arm
And the stainless works
Night and day difference in the clearance (and price) but I think they are well worth it! Hope this helps out someone else before they get cheap "swap" headers like I did.