Hi and welcome
I have also been looking forward to trying this gem to take some screenies for facebook.
Went in fine. The usual : Unzip into a temp folder and copy/paste folder
FA-18C_FSXBA_BA_18.3.00 into the main Simobjects/Airplanes folder in P3D4. (Note this is inside another folder with the same name! - Make sure you copy the one with all the 'Model/Panel, etc. folders insde!)
Just note the 'P3D Specific Files' - inside you will find
Panel.fleet and
Gauges folders. Take the files inside each of these folders and copy/paste those files into the main Panel.fleet of the aircraft and Gauges into the main Gauges folder in P3D.
Worked for me. What a beautiful aircraft and flies like a dream. (I do get a 'FCS fail' warning on the HUD - will see why that is and report back. There is a LOT to learn to get the best out of this classic)
Simplicity is the ultimate sophistication. – Leonardo da Vinci