Pistons specs question for 340 build

The -5cc pistons are likely flattops with a five ccdeep valve relief. The -16cc are likely dished. You will need to have the compression height of the pisons (measurement from center of piston pin to the flat part of the piston head) to have a vague idea of c.r.
There are a bunch of ACTUAL measurements that need to be done to get an accurate c.r.