did a mock up on the old duster build

so the flat top of the piston measures .016 or .017 thousands out the deck..that is fine...the dome is .345 thousands out of the deck...

you have open chamber heads....that fine...

put the head on the block without the head gasket ...turn engine over...if the pistons does not hit the heads....good...

get a head gasket with the thickness you want to use...that will be additional piston to head clearance.