Hey Manny,
I know they make more torque in pretty much all cases. However, you can't get just the headers alone and they will NOT bolt up to a factory mid-pipe which is something you would need if you are running the new Bassani Dominator GT-Pro or GT-Race systems. And this goes for AR, Dynatech and Kooks as well. Except the Kooks & Dynatech you can get the headers standalone but still won't bolt up to the stock center section. All of them you need to use their mid-pipe which defeats the purpose of running the Bassani setup. I called everyone and was told i had to run their center section. There is no standalone header that will bolt up to the Bassani system as of yet other than the B&B (which will eliminate the factory cats as well). The Kooks or Dynatech would be the ones to use but there would have to be some modifications done. And i say these 2 only because u can get get them without a mid-pipe and would be more cost effective.
My main point, the AVERAGE consumer is not a race car driver and needing to squeeze every possible ft-lb of torque out of a header system. They are after a decent power increase and great sound! Therefore there are other options available. My whole basis here is really just restricted to someone wanting to run the Bassani Dominator systems and wanting to add some headers down the road without needing any custom modifications.
In my case, i had no choice but to lose my Bassani mid-pipe and use the one that came with my headers because i wanted a 1-7/8" primary and i didn't want to cut anything up.
Good gawd i hope that wasn't too painful and makes a little sense as far as what i'm trying to say!
BTW: If you have actually "bolted up" any of the above mentioned headers standalone, other than the B&B, without any modifications to a new C6 Bassani Dominator catback....then everyone at Kooks, AR, Dynatech and LG should be fired because they have no clue as to what they are selling! lol
This is a link to what the new systems are like....maybe this will help make some sense as to what im trying to say.
http://www.canadiancorvetteforums.c...rmance/1486-bassani-c6-exhaust-installed.html
Cheers!