Designing avionics stack a la carte

I like to simulate my real world avionics stack, which consists of GNS 750 Navigator, G3X Touch PFD, G5 Backup AI, GTX 345 Transponder, SL 30 COM2 radio, GFC 500 Autopilot. Since no stock plane exists with this stack, I have to craft it myself. Is this possible? Ideally, I could design my avionics stack via drag & drop. It would be awesome if 3rd parties could offer the various individual avionics devices and I could buy them from the market place and stitch them together.

This is not possible.

The avionics systems are just the code. The actual bezels and such are modeled directly in the individual cockpit models. There would be no way for a third party to offer this kind of drag and drop solution presently in the sim.

-Matt | Working Title