Rage

Im considering putting headers, MSD Ignition, and a converter on my car. I have a good converter in my garage so I might as well put it on, but I am confused as to which headers to buy. I want a dry raspy sound, but not too loud, I have 3" Flowmaster exhaust soo...what header will make a good combo with that? With that being done + the ignition, what kind of timeslip improvements am I looking at? And also how much will those headers cost me? Y'all tell me what you think.

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Blue 87 IROC-Z Camaro,305 TPI