Max horsepower with EQ heads?

About 10 years ago I had an EQ head here to flow.....
I used a 1.92” SI stainless intake valve with a back cut. The exhaust was tested with an OE magnum valve.
The head itself is ootb:

4.00” bore, 28” test pressure-
Lift—— I/E
.100— 66/50
.200—137/96
.300—194/137
.400—219/163
.450—224/168
.500—227/171
.550—234/173
.600—236/173