lt1 mod?
I dynoed +3rwhp (cutout open) and -7rwhp (cutout closed) with that mod.
Not ot mention it sounded like *** and I kept breaking e-cutouts due to clearance issues. (car was lowered at the time)
I've since removed it and gone back to a normal 3" I-pipe.
And yes, dual/dual

I've had three Fbodies and tried several catback and custom exhaust systems.
In each case I ended up back with the hooker.
Nothing but compliments on the sound, great flow and no rasp.
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Here's a clip of my Hooker.
http://s38.photobucket.com/albums/e1...t=JamesM-1.flv
Here's an archive of other cars with different exhaust setups.
http://ls1sounds.com/
. of course its a matter of opinion, but there is ABSOLUTELY no comparison to me, flowmaster sounds much better. 





