More info mining has led to this:
G5 iSight iMac has a 17" LCD p/n 661-3789
Core Duo iMac has a 17" LCD p/n 661-3879
It's interesting that the Core Duo (early 2006) has a p/n lower than the G5
The G5's LCD connector is referred to as the TDMS (Terminal Display Management System), which was used on the G4 luxo while the Core Duo one is LVDS (Low Voltage Differential Signaling). The physical connector appears to be identical.