Engine Builders-KB356 Piston Milling

Purchased a used 408 Long Block some time back.

It wasn't from the person that had the motor built so alot of the specs were found through disassembly.

It has KB356 Pistons that are about .040 in the hole and the quench dome has been milled flat with the rest of the piston. The KB356 specs it is +23.5 cc dish, I assume this is unmachined with the quench at zero deck. I cc'd the piston today and it took 9cc to fill it up. Does this seem about right? Trying to order my head gasket today and dial in my compression ratio the best I can.

Will attach photo from my phone.

Thanks!

Thomas