Are there any addons to get GPS or the transponder working in this aircraft?

There is no GPS in the real model, then we hav'nt put it on the panel, but... if you need a GPS without PA connexion, you can open the GPS window (Windows menu), and when the all avionic devices are ON, use the GPS in a separate window (like in Flight Simulator, sorry ;-)) The result in the pic following this text.

Thanks for the reply.Qdog