How much power would you say could be made with a set of CNC ported HEMI Stage V heads, 4,5 bore block, 4,375" stroke crank?

This would be pump gas and naturally aspirated.

I also have 2,25" headers.

I dont have the heads but was thinking about the replacement stle Stage V HEMI Heads. I know they make some other more serious heads but then you have ti use custom headers and more expensive rockers I think which would go beyond my budget...