Dan,
Seeing that your car is very original, take a look in a '71 Service Manual (maybe an owners manual). In the first section of the shop manuals I have ('67, '68, '69) there are illustrations showing where to find the fuel filter. For '69 they show; slant six - nearly horizontal about 1/2 way between carb and front of engine; LA - about 35 degrees, about 6-10" above and between heater hose inlet and outlets on the intake; R/RB - nearly vertical to the side of the water pump.
- Matt
