the primaries are not too big, everyone just thinks they are too big. with the minimal amount of torque lost on the low end, you wont even notice it with the power gain overall. and besides, who with a fwd 3800sc car cant spare some torque on the low end. traction loss anyone?
buy them because they are cheap, no other reason. i love my s&s because the install was cake and they are a nice set of headers. others swear by TOGs when i hate them because they are so damn hard to seal.
whatever you choose, make a wise decision.