For the last nine years I've been the curator of an airborne museum of ancient avionics, that looks a lot like a C-172N. The show is headlined by the 40-year-old original KX175B navcoms and KR85 ADF, all controlled by the quaint, but TSO'd, KMA20 audio panel. More recent additions were a KN64 DME and a KLN90B (VFR) GPS, but they're no spring chickens, either. The 21st Century is represented by the Stratus ADS-B out transponder. I no longer fly IFR. I live in a state where clouds are discouraged, and those few that do appear are often filled with lightning, hail, and other nastiness. Primary VFR navigation is handled by the KLN90B and iPhone/iPad/Foreflight, though sometimes I'll fiddle with the VORs for old times' sake. I plan on keeping the airplane as long as it will have me. The capability of the equipment has been satisfactory. But the KX175Bs are starting to get a little cranky -- though that may be more a problem with the brittle old connectors in back, rather than in the radios themselves, so just getting a TKM slide-in replacement radio might not be the answer. Where's Nancy Narco when you need her? What would you do?