The easiest way to find your fuel filter would be to get under your car, starting from the fuel tank, and follow the fuel line to the motor. This is how i found my filter in the EA. Mine was towards the front, kinda near the front passenger door.
EA Fairmont Ghia : 3.9L MPFI, 2.5" cat back sports exhaust, K&N panel filter. Pioneer head unit, pioneer 4" three way fronts, Pioneer 6" 3 way rears, 2x 12" subs, blue interior light.
My main pride and joy : '76 XB Fairmont GS, 250CI, 140,000 Km and all stock.... for now! (Factory air-con on the way)