The o-rings (from the biggest to smaller):
1)Water pump seal
2)#15A (from etka) If i remember, G40s do not need that seal, just use silicon.
3)The water tube behind the water pump that connects wp and thermostat housing
The 2 silver and the black one are the same seal #8 (from etka).
All the 1272cc engines have the same block seal kits. You'll find out that you will need 1 of the 3 seals.