F18C ACLS?

Yes, this is simulated to some extent but it's still experimental for the most part.

You can turn on the ILS, select channel 11 for the ICLS, then make sure that ILS is selected on the HSI as well. Then you should be able to see the ILS in the HUD and if you do you can turn on the autopilot and select CPL to couple the autopilot to the ILS signals. The HUD should then show CPL P/R for coupled pitch and roll mode. At this time the auto-throttle control (ATC) of the F18 is not implemented yet, so you still have to manage speed. But it can be done. If you place yourself on the long final approach for the aircraft carrier in the location menu, with assistance auto-tuning enabled, you only have to turn on the autopilot and select CPL and the aircraft should capture the ILS and land on the deck automatically.