I'm not sure the span of years, but my dad's crew cab before I swapped it to a diesel, was a 1989. Each tank had a lift pump, then had the high pressure right after the filter on the frame.@Nero what years were these in? I had a 94 f250 eclb 2wd 460 e4od and a 95 f350 cclb single wheel 4x4 with a 460 e4od. Both of these were dual tank trucks but only had a high pressure pump in each tank. Only thing on the frame of them was a fuel filter just forward of the selector valve.
The first ford factory frame mounted pump that I am aware of is the 7.3 superduty.
James