Another low budget 360 build

I know the block has a stock deck height. I don't think they would vary throughout the years.
Not sure how accurate of a measurement I would get with dish pistons that are still in it
Hopefully I can get away with a bottle brush hone on the cylinders and not have to bore
And the open chamber heads were rebuilt and probably lightly surfaced. not sure how to check the volume.
Not sure what the quoted CCs of an untouched open chamber head is. I found 65cc in my searches. would that out of the box specs or is that considered what it would be with maximum allowed after surfacing?

I was looking at this to get an idea to what would be expected. I assume their rating is with standard .045 gasket.
Mopar TRW Forged Pistons Speed Pro Forged Piston Hypereutectic Sets
This is the spec's of the H405CP piston
Bore (in):4.000 in.

Bore (mm):101.600mm

Piston Style:Flat top, with four valve reliefs

Piston Material:Hypereutectic aluminum

Compression Distance (in):1.576 in.

Piston Head Volume (cc):+10.00cc
Not sure if this helps or maybe I am rambling. Could have been the excess of coffee this morning