You want to use black epoxy primer and a urethane SS flat black paint.
You REALLY need to get over to the Team Camaro site Team Camaro Technical Question & Answer Forum - Camaros.net
for your restoration questions. You do realize that car is VERY valuable and you want it done right. Not that there are guys here who know a lot about Camaros and certainly there are plenty here with a lot of knowledge on general restoration but your Camaro specific questions are best answered at Team Camaro. And with a car that special,I would say most every question you have should be regarded as "Camaro Specific".