Neat - I wish more developers would give us the option of a blank flat panel like that so as to install our own gauges.
I installed the GTN750 into the VC tonight. The 650 might be a better fit, with the height in that spot the 750 ends up a bit small if you keep it in it's height / width proportion. No pics (it's late & I'm tired) but it installed easy enough:
The update installs a new panel.cfg file; it has three sections titled [Vcockpit04], [Vcockpit05] & [Vcockpit06]. The last one is the flat panel.
To install the 750 so it's at it's proper proportions (and center it in the panel space), I used:
gauge00=F1GTN!GTN750, 90, 109, 846, 801, UNIT1.VC
If you want it to fill the spot & don't mind the gauge being stretched horizontally, use:
gauge00=F1GTN!GTN750, 90, 109, 1011, 801, UNIT1.VC