Sanderson is a good choice if you want header performance without the sealing headaches. And being cast iron, they're quieter.
Shorty headers are dyno-proven to make better high-rpm power than full-length headers. The full length type make better torque. But if you want the best torque producing headers, you should consider the Doug Thorley tri-Y headers. I have read that any header for a first generation Camaro will fit these trucks, and Thorley does make a Tri-Y for a first gen F-body with a Chevy motor.
Stick an X-pipe crossover behind the headers and you'll boost torque even more, up to about 3500 rpm. H-pipes typically are better from 3500 to 5500 rpm or so, then X-pipes again are better in the upper rpms above that. According to literature I've read comparing them.
Unfortunately, this is something you just have to try and see. Be prepared for modifications, and make sure to post back so that we know what to expect if we go the same route. Thanks.
