Really would depend on how the armor was made, raised cod area centered or offset, most makes of armor appear to have the raised area of the cod offset to the abdomen (like screen references), but some are centered like my ATA
Screen used raised cod ridge offset
Some align the belt to the center of the the abdomen, some align the belt to the center of the raised cod ridge (under ab plate ridges) the later being more screen accurate
EIB examples of different makes of armor
Offset raised cod area
RS
Anovos
MTK
TM
Centered raised area cod
AM
ATA
AP
WTF
RWA
Most also having their belt centered to the large ab plate.
If your armor has the offset raised cod area then you could definitely make it absolute screen accurate, but if you have the centered raised cod area you are stuck, you can't bring it over as it would interfere with your thigh gap.