+1 on kore 3. Tobin really knows his stuff and can help with the overall braking system set up.
If you know what your doing and/or more adventurous flynbye makes brackets that adapt the Gen5 camaro brembos to 1st gens. Those can be found for considerably less $ than Z06 brakes.
Ive never heard of anyone actually doing this hence the adventure part
http://flynbye.com/catalog/c5_p1.html
I have C6 spindles on my Art morrison subframe so I used Wilwoods Z51 aerolite kit on aftermarket(DBA 5000s) Z51 rotors as my low cost 6 piston option (bought from Kore3)
http://www.wilwood.com/BrakeKits/Bra...emno=140-12629