1982 CROWN VIC 5.0 FUEL FILTER AND HEATER CORE QUESTIONS

HELLO I HAVE A 82 CV 78000 MILES THE HEATER WILL NOT BLOW HOTT AIR BUT THE HOSES ARE HOT. THE CAR DOSENT OVERHEAT AND RUNS GREAT. AC CLUTH IS GETTING BAD BUT IT BLOWS HARD AND COLD ON HIGH AC AND WHEN I SWITCH TO HEAT IT BLOWS WARM??ANY SUGGESTIONS.

ALSO IS THERE A FUEL FILTER LOCATED ON THIS VEHICLE ANYWHERE.THANX IN ADVANCE. ITS HARD TO FUND PEOPLE WHO HAVE WORKED ON THE CROWN VIC LTDS BY THE WAY IT HAS A 5.0?1? IF THAT HELPS