Hypothetical Q: If a person replaced a set of 452's w a set of eddies and the chamber/port dimentions were IDENTICAL on each (1) what would be the difference in performance (if any) and (2) With the aluminum conducting heat faster would that be what would be making this difference (if there's a difference)? and (3) if the eng (w the 452's) was at the ping limit with his current choice of fuel (and his current CR) if the SCR was was raised (w NO other changes) would he be able to run the same octane w no pinging? and (4) if so would there be a gain in power (w the higher CR/alum heads (which'd be wicking away heat)?