Hi everyone Please first forgive my lack of knowledge in this area, and very new at this, not an aircraft owner, just a private pilot and looking forward to own some time soon hopefully. I've been looking at some avionics upgrade stuff on the web and found that all the "same" or similar avionics units have a huge price difference between experimental and certified aircraft which is kind of crazy, although I can imagine why but still annoys me. I did read somewhere that there is a way to go around it installing this non-tso equipment on certified aircraft, or that there is an approvement for that coming in. How ever, my question would be, if there is any actual way around this, or if it is possible to install lets say maybe a Garmin G5 or similar Dynon unit on an aircraft that is a VFR only AC and will not be used or certified for any IFR operation, for instance I am looking at a very old very basic VFR only 1957 C172 which doesn't even have an attitude indicator but does have room for it in the panle, could I place a non certified G5 unit there and still use the aircraft as basic VFR? Again sorry if my question seems to be too dumb or obvious but I really don't know much about this yet, and I'm trying to learn and understand about this topic.