I prefer the old type instruments. That is what I learned on in 1969. That is why this is a DHC-6-300+ rather than a -400.
I do have a glass panel planned for this display. The vertical linear type airspeed and altitude gauges are actually easier and less processor power hungry. No rotating except the artificial horizon..
Some of the glass panels aren't as effective at IFR. The B777-300 can't determine when you cross a VOR radial more than 45 degrees off your heading. The pointer disappears off the display. Not good on departure from KLAX, where you need to cross the SMO 160R before starting your turn and you are heading 250. You can't tell when to turn. I can with the old panel.
The only thing missing from the radar altimeter in the DHC-6-300 is an audible alarm when decision height (or minimum terrain clearance) is reached.
Mine will get that today. To stay with the old instruments, it will probably not be voice.
It already has the mods that let it use this heading controller.
This is the current version I use. It is a 200M download due to the large number of liveries. Somebody went to a lot of work making them, so I left them.
http://www.prolectron.com/flightgear/dhc6p.zip
I'll post when it has an audible warning for the radar altimeter.