Hey John
You would be able to replace the FC grill on the model with an FE with no issues...vertualy the same grill cavity.
As for the FE indicators, they came from the factory without the indicators, so this would be correct.
The indicators could be purchased as a Nasco kit and fitted by owner or dealer.
The Holden script is correct for the side trim on an FE ute.
1 more thing to be aware of, the FE ute did not have a numberplate overrider on the front like the sedan. It is just like the FC, so no need to change that.
Regards
Alex