Where is the fuel filter located on a 1994 Ford E350 van with the 7 3 liter powerstroke diesel?

IDI diesel fuel filters are (looking from the front of the vehicle) on the right side of the engine. Looks like an oil filter hanging upside down. On powerstroke diesels, they are on the top of the engine, mid-way back. They have a black, "screw-on" cap about 4" in diameter. Recommend using a WIX filter... STAY AWAY FROM THE FRAM FILTER!!!