Re: Changes in Ford vans
E-series wheel are still SAE. They never became metric. Exception: 4x4 conversions with the '99+F-series front axle usually have metric wheels, by using rear adapters, or swapping rear axles.
Not sure where to find this stuff exactly, except newer years which are included in the "What New" publication from Ford Fleet.
Here's some stuff I can remember off hand:
Body style change was 1992. Front clip upgrade was 2008. Mirror mounts changed 2003. Rear turn signal color changed 1995. Front axle, all brakes changed 2008. Gas engines except 6-cyl became overhead cam Triton motors in 1997. Dash change 1997 and 2009. E150 gained GVWR 2007. E450 gained GVWR 2008.
2000 E450 dually V10 wagon