Maximizing flow limited combos?

If I wanted to be sure I went over the 500hp mark, I’d be at least in the mid-250’s.
The particular lobe family used would be a factor.
(Although, if it were going in a bracket car, at 11.5 CR it could be noticeably more…….depending on various vehicle related considerations)

All the heads would really need is a once over to correct any potential “issues”, and a spring/retainer/lock upgrade.