I'm speaking more along the lines of a 285ci engine. A high winding,modified type engine.
I know of a 321ci W2 headed,all 48 degree engine that makes over 700 HP ! Of course no expense has been spared on it.

If they may not make anymore 48 degree heads, whats the fix for the valvetrain issues in a high winding,small cubic inch sb Mopar ? With W2 heads I mean. Also, whats the best cast intake for W2 heads ? Also, could you use 48 degree heads on a 59 degree R3 block, and if so, to what advantage ?