The 1998 change was only for Ford Super Duty trucks. The single wheel vans are still 8x6.5. The dually vans and panel vans have some variations though. The Ford 16x6.5 wheel has a 4.25" backspace, whereas GM used a 4.5" and Dodge was 4.6-4.75". Sometime in the new millenium, Ford went to a 16x7 wheel and a 3.75" backspace. The 08-current Ford vans are using a rim that doesn't have the bump outs on the center ring like the earlier models. In fact, they look almost identical to our early Stovebolt rims.

http://www.4wheeloffroad.com/techar...ck_wheel_bolt_pattern_guide/viewall.html

http://www.ricksontruckwheels.com/wheels-oe.php

1954 3600 Chevy Truck
"The Fake Truck"
In the Stovebolt Gallery
More pix on Photobucket