E heads are good, but you will have to use headers or aftermarket round port manifolds.
KRE heads http://www.krepower.com/dport.htm Will bolt right up with existing manifolds, but I would recommend using a long branch manifold to extract the full potential of your investment.
The best brand is speculative and is based totally on what your overall goal for the car is.
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1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.
