The TKM MX-300 is designed as a direct slide-in replacement for common older Cessna avionics such as the ARC RT-328 or the Narco MK-12D (Cessna) Replacement. This means the MX-300 can quickly and easily replace the original Cessna radio at no installation cost. The radio being offered was removed from a 1974 Cessna Skyhawk (14v) for an avionics upgrade. It was then sent out for an inspect and repair as necessary from Bevan Avionics, one of the top avionics repair facilities in the country. It is in excellent working and cosmetic condition and comes with an FAA Form 8130. Free shipping. $1,500.