I agree with your assessment of the headers as i have a couple cars with the TTI's and a car with a custom built set, but I do feel there is too much emphasis being put on header size, and granted the larger ones will probably make more peak power but when it's all said and done I firmly believe that it's the torque converter that's the most important piece on a street/strip car or even straight drag car, it's the most overlooked and is the main factor in why some guys combo's run impressive ET's and other's similiar combo's just leave them puzzled and scratching their heads.