I hear you Bruce, I'm trying to find some middle ground with the current build. The HIGH RISER heads with those massive ports will not like the lower rpm range, not to mention the twin 4 barrels with no heat riser in the intake manifold (stock setup for a high riser).
So, cam selection is a critical issue, vacuum secondaries on the carbs (and a little smaller). Compression down from 12.5 to 1 to around mid 9's will help a LOT.
...I just gotta have my 427, love those High Riser heads and the 2 four barrels look awesome!!!