I think it is harder than you think. The F/A-18 is a default Acceleration aircraft. I know that Captain Sim created it, but we need to understand that the licensing for the F/A-18 maybe along similar lines to what MS are using in Flight. If that is true, all Captain Sim can do is create a way to add extra models to fit on the main model, like the one that some dev did that adds STOL Kit to any aircraft you want.