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