The aircraft crashed into trees during an instrument approach at night in stormy weather. Both the CFI, seated in the front left seat, and the new owner of the aircraft, were fatally injured. An IFR flight plan was filed and the CFI had obtained 2 weather briefings prior to departure. The aircraft had just received an annual inspection as a part of the sales contract. At 2313 Brunswick FSS advised Jacksonville Center that N8855V was cleared for approach and was inbound. Jacksonville gave FSS the missed approach procedures. At 2321 FSS advised Jacksonville that communications had been lost. Investigation revealed that although the aircraft had received an annual inspection on 03-15-83, a discrepancy list, dated 03-16-83, found in the aircraft showed the #2 VOR was unreliable; the directional gyro precessed; the compass needed to be calibrated; the fuel gauges were unreliable; and the alternator output was suspect in high load situations. The altimeter, pitot static system, and transponder had not been recertified since 1978. Also, no record of VOR accuracy checks were found during the investigation.