Maximum Performance N/A 383 build. Input wanted from engine gurus.

67charger383 said
Fully race prepped 452 heads with near max wedge size intake ports

67charger383 said
Trickflow 240 heads,

Need more cylinder head than these to make power at 7500 rpm and beyond.
Realistically 6500 would be the limit with the parts listed.
also looking at 4.56 gear ratio instead of 4.10