valve stem height - need some help

If one were to have the valve seats in these heads cut on a guide and seat machine in a manor that helped with the flow....... the intake seats would end up being sunk a bit.
Then, if you’re paying attention to tip heights as part of the process, you could get the ex tips pretty close to the intake tips when you cut the exhaust seats....... since you’ll likely end up sinking those some as well.

It “could” be done with stones........ but that would a be a pretty looooong process.