I'm kinda looking into getting this radio to a higher level, or replace. I'm kinda looking at sliding something into the existing tray? Here are my main issues, 1st the screen is buggered up, lights half out. I have to almost count the clicks to get to the correct freq, kinda a pain in a busy environment. It takes a long time to warm up, 5 minutes or so before it works as advertised. Then after all is said & done, ATC says 'loud & clear' when I do a radio check. This has G/S and I think is a KX-155, USA made. My 2nd radio is an old KX-175, not any better. Do they still make new KX-155s? I guess I may think more about the ADS-B upgrades? GTN-650 or so?? Will a KX-165 slide in? I'm not ready for immediate action, but I can see some upgrade in a few months. Just looking for ideas.