Wrong Aircraft displayed in multiplayer mode

I'm trying to find out what FSX looks at to determine what other aircraft types are displayed. I have replaced Grumman Goose radial engines with turboprop engines in the aircraft.cfg file. I am trying to duplicate the performance of the Antilles Seaplanes LLC Goose seen at http://www.antillesseaplanes.com/specs.htm Now when I go on multiplayer, other players see me as a King Air 350. I am still using the Goose model and most of the cfg file of the original MS FSX file. Any thoughts or insight would be greatly appreciated.
Thanks

Unless the other players have the exact plane as what you have, fsx will change the aircraft.
And I do embrace exact!

I would really like to find out specifically what fsx looks for...