Well...... “flowing” the heads doesn’t actually make them any better....... but at least you’d know what you have.

I looked at my notes again....... when I did my test, it was a 4 angle seat and 2.25 intake valve.
So...... there could still be a 4 angle seat in one hole, but that’s not going to be representative of what the others flow with 3 angles and a smaller valve.

My notes show I tested the number 4 or 5 cylinder.
So if you pull those two intake valves, one of those seats might still have the 4 angles...... although if they recut it, the 4th angle could be mostly gone.