Ford also changed the fill necks with the OBS.... All of our bricks you had to dribble fuel in. I put 10 bucks in the 89 we had and it took several minutes. But the 92 we had the big nozzle would work, just not on full blast, and the small nozzle was fine. (My preferred station has 1 on-road diesel pump, one side is a big nozzle, the other is a small nozzle...) My 03 Excursion, it will use the large nozzle cranked wide open. That will pump 40+ gallons in there in a flash. I've filled the Excursion with 40 gallons, faster than one of my gassers with 20.....
With the vans though, I have no idea.... they have always been Ford's "red-headed stepchild"... who knows, they may still be the early 70's "regular gas" fill necks...... remember, back when you had to specify "regular" or "unleaded"...... or some places Ethyl...... or at Sunoco, turn the knob on the side of the pump.......