Exhaust limits/Carb choice
I totaly agree with dodge freak and Im 28. My first car (that I drove with a license) was a 73 camaro with a balls to the wall 66 327 that had a holley DP and a set of headers. About 6 months later the carb was leaking and the headers were all bashed up.
Go with the manifolds and an Edelbrock carb.