Help identifying pistons and cylinder heads

https://www.mopar1.us/headcastnumber.html
This shows the heads to be 83-86 police heads with 1.78 intake and 1.60 exhaust valves . I don't know the difference between police heads and other LA heads of those years.piston may have other numbers or markings on the bottom that may help identify them.
I took a set of calipers to the valves this morning and you are right, the intake is 1.78...yikes...not even 1.88

They look like .030 over stock replacement pistons to me

I second .030” over stockeroos.

The heads easy enough to look into.

Yea I can't imagine the 30 stamped in them being for anything else, but figured I would ask in case others have the same pistons in an engine of their own and can confirm that indeed that stamping suggests .030" over.