E-street vs Promaxx vs 440 Source

PRH said

not all reworked stock heads are equal.
They don’t need to be awesome for that level of performance....... but they do need to at least be “good”.

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I’ll go ahead and ask… What would it take at a minimum besides a proper valve job to make a set of 452s 500hp capable? I imagine the 2.08 intake is more than enough for the stock port size. Is it worth using the MP porting templates to the letter? Hand blend the chamber to the bore? Do you suggest smaller stem valves for extra flow?