Fuel Filter Location??

[tcrsolutions]

Hi all! Just picked up a 1995 GulfStream Scenic Cruiser with the Cummins 5.9 Diesel with low miles and it was maintained like a car (previous owner was doing oil changes/service every 2000 miles and has all the receipts). I just took care of changing the oil and oil filter myself and picked up the fuel filters. I see the one fuel filter underneath the engine, almost parallel with the Oil Filter. It is a Fleetguard 1251 Fuel Filter. However, in all of the receipts from the previous owner, there was a second Fuel Filter that was changed, Fleetguard FS-1242-B. I don't see this filter anywhere. Is it possible I need to remove the bed to get at it from above or is this filter located somewhere else?

Any help would be appreciated! Thanks!