It's not too often two developers team up to make an addon, but when they do, the quality of the addon grows tenfold.
This is the case with JRollon and SimCoders, who have released their SIAI-Marchetti SF-260D! The aircraft have a Reality Expansion pack (REP) as standard courtesy of SimCoders, and features intricate detail throughout, in both modelling and systems.
... These are just the headers of the features list! Find all the details you need to know, including checklists, manuals and that very lengthy feature list here.
The aircraft is available for purchase for $44.95.