Are the '97 Camaro calipers low drag? I ran across a site stating that they are, and that they require a step-bore master cylinder to operate correctly:
http://www.manualbrakes.com/FAQs.html
I'm not sure if it's required with front calipers that are not low drag, and this might apply specifically to non-boosted applications. I'm also not sure if only the front calipers were low drag and I have found any info either way.